Royal Thai Army

The Royal Thai Army or RTA is the army of Thailand and the oldest and largest branch of the Royal Thai Armed Forces.

History

Origin

The Royal Thai Army is responsible for protecting the kingdom's sovereignty. The army was formed in 1874, partly as a response to new security threats following the 1855 Bowring Treaty with United Kingdom, which opened the country for international trade.

Current

In modern era, the army has a long history of coups d'état and coup attempts. Its leadership continues to see coup-making as one role of the army.
On 22 May 2014 the army deposed the government, appointed military officers to the national assembly, and on 21 August 2014 they elected the army's Commander in Chief, General Prayut Chan-o-cha, as prime minister. The general retired October 2014 to concentrate on political reform which he said would take at least a year, following which he promised national elections would be held.
The existence of an information warfare unit participating in a cyber campaign against government critics was leaked to the public in late February 2020. In 2020 Twitter shut down a network of accounts which were engaged in information warfare. According to Twitter "Our investigation uncovered a network of accounts partaking in information operations that we can reliably link to the Royal Thai Army." The operation had targeted the political opposition within Thailand. The Thai Army denied that they had been involved in the disinformation operation.

Army components and control

The number of army generals is unclear. One point of comparison: as of 1 November 2019, the US Army had 322 general officers for a force of 471,990 troops. Saiyud Kerdphol is Thailand's oldest general, a veteran of World War II and Korea who retired in 1983 as supreme commander. During his tenure, general officer numbers were based on the number of troops under their command., only 150–200 four-star generals occupy command positions. Speaking on the topic of army manpower, Saiyud declared that, "Everybody being a general is unbelievable. Full generals don't have a seat to sit in or a job to do."

Command and control

The commanders-in-chief of the Royal Thai Army is considered the most powerful position in the Royal Thai Armed Forces. Since 1 October 2024, the commander-in-chief has been General Phana Khlaeoplotthuk.

Commander-in-Chief: General Phana Khlaeoplotthuk since 1 October 2024
Deputy Commander-in-Chief: General Nattawut Nakanakorn since 1 October 2024
Chairman of the Royal Thai Army Advisory Board: General Ekkarat Changkaew since 1 October 2024
Assistant Commander-in-Chief: General Wasu Jiamsuk since 1 October 2024
Assistant Commander-in-Chief: General Chitsanupong Rodsiri since 1 October 2024
Chief of Staff of the Army: General Thongchai Rodyoi since 1 October 2024
Commander of the 1st Army Area: Lieutenant General Amrit Boonsuya since 1 October 2024
Commander of the 2nd Army Area: Lieutenant General Boonsin Padklang since 1 October 2024
Commander of the 3rd Army Area: Lieutenant General Kittipong Chaemsuwan since 1 October 2024
Commander of the 4th Army Area: Lieutenant General Paisan Nusang since 1 October 2024
Commander of the Royal Thai Army Special Warfare Command: Lieutenant General Narongrit Kamphira since 1 October 2024
Structure

The army is organized nationally into four army areas:

First Army Area - – headquartered in Bangkok, controls troops in 26 provinces in central, eastern, western Thailand and Bangkok.
* Command Division -
** Headquarters and Headuqarters Company
** 21st Signal Regiment, 1st Army Area
* Organic Units
** 1st Army Corps
*** Headquarters and Headuqarters Company
* Combat Division -
** First Army Area Operations Center -
*** Burapa Command aka Burapa Task Force -
**** Headquarters and Service Company
**** Quick Reaction Force Company
**** Army Aviation Squad
**** Combat Engineer Team
**** Fire Support Unit
**** Military Dogs Platoon
**** Military Intelligence Operations Team
**** Military Intelligence Unit
**** Signal Corps Unit
**** 12th Ranger Forces Regiment -
**** 13th Ranger Forces Regiment -
*** Surasee Command aka Surasee Force -
**** Headquarters and Service Company
**** Army Air Defence Coordination Team
**** Army Aviation Operations Team
**** Combat Engineer Team
**** Civil Affairs Coordination Team
**** Civil Affairs Operations Team
**** Heavy Weapons Platoon
**** Military Intelligence Operations Team
**** Military Intelligence Unit
**** Queen's Cobras Task Force
**** Quick Reaction Force Platoon
**** Reconnaissance Platoon
**** Royal Initiative Projects Coordination Team
**** Signal Corps Unit
**** 14th Ranger Forces Regiment -
** 1st Special Forces Training Company -
** 11th Ranger Forces Regiment -
** 1st Division, King's Guard -
*** Headquarters and Service Company, 1st Division, King's Guard
*** 31st Infantry Brigade, King's Royal Guard -
**** Headquarters and Service Company, 31st Infantry Brigade, King's Royal Guard
***** Heavy Mortar Company
***** Reconnaissance and Surveillance Company
***** 1st Infantry Battalion, 31st Infantry Brigade, King's Royal Guard
***** 2nd Infantry Battalion, 31st Infantry Brigade, King's Royal Guard
***** 3rd Infantry Battalion, 31st Infantry Brigade, King's Royal Guard
*** 1st Artillery Brigade, King's Royal Guard -
**** Headquarter and Service Battery, 1st Artillery Brigade, King's Royal Guard
***** 1st Artillery Regiment, 1st Artillery Brigade, King's Royal Guard
***** 11th Artillery Regiment, 1st Artillery Brigade, King's Royal Guard
***** 31st Artillery Regiment, 1st Artillery Brigade, King's Royal Guard
*** 1st Engineer Regiment -
*** 1st Medical Regiment -
*** 4th Armoured Regiment, 1st Division, King's Royal Guard -
*** 12th Military Police Regiment
*** 1st Signal Regiment, King's Royal Guard -
*** 1st Cavalry Squadron -
*** 1st Long Range Reconnaissance Company -
*** 1st Ordnance Company -
*** 1st Quartermaster Company
*** Airfield Service and Control Tower Team 1
** 2nd Infantry Division, Queen's Guard -
*** Headquarters and Service Company, 2nd Infantry Division, Queen Sirikit's Guard
*** 2nd Infantry Brigade, Queen's Guard - -
**** Headquarters and Service Company, 2nd Infantry Brigade, Queen's Guard
**** 1st Mechanised Infantry Battalion, Queen's Guard
**** 2nd Infantry Battalion, Queen's Guard
**** 3rd Infantry Battalion, Queen's Guard
*** 12th Mechanised Infantry Brigade, Queen's Guard -
**** Headquarters and Service Company, 12th Infantry Brigade, Queen's Guard
**** 1st Mechanised Infantry Battalion, Queen's Guard
**** 2nd Mechanised Infantry Battalion, Queen's Guard
**** 3rd Mechanised Infantry Battalion, Queen's Guard
*** 21st Infantry Brigade, Queen's Guard - -
**** Headquarters and Service Company, 21st Infantry Brigade, Queen's Guard
**** 1st Mechanised Infantry Battalion, 21st Infantry Brigade, Queen's Guard
**** 2nd Infantry Battalion, 21st Infantry Brigade, Queen's Guard
**** 3rd Infantry Battalion, 21st Infantry Brigade, Queen's Guard
*** 2nd Artillery Brigade, Queen Sirikit's Guard -
**** Headquarters and Service Battery, 2nd Artillery Brigade, Queen's Guard
**** 2nd Artillery Regiment, Queen's Guard
**** 12th Artillery Regiment, Queen's Guard
**** 21st Artillery Regiment, Queen's Guard
**** 102nd Artillery Regiment, Queen's Guard
*** 2nd Service Support Brigade, Queen's Guard
**** Logistic Battalion, 2nd Support Brigade-
**** Maintenance Battalion, 2nd Support Brigade-
*** 2nd Armoured Regiment, Queen's Guard
*** 2nd Engineer Regiment, Queen's Guard
*** 2nd Medical Regiment, Queen's Guard
*** 2nd Signal Corps Regiment, Queen's Guard
*** 12th Military Police Regiment
*** 30th Cavalry Regiment, 2nd Infantry Division, Queen's Guard -
*** 2nd Anti-tank Company, Queen's Guard
*** 2nd Long Range Reconnaissance Company
*** Airfield Service and Control Tower Team 2
** 9th Infantry Division -
*** Headquarters and Service Company, 9th Infantry Division
*** 9th Infantry Brigade -
**** Headquarters and Service Company, 9th Infantry Brigade
**** 1st Infantry Battalion
**** 2nd Infantry Battalion
**** 3rd Infantry Battalion
*** 19th Infantry Brigade -
**** Headquarters and Service Company, 19th Infantry Brigade
**** 1st Infantry Battalion
**** 2nd Infantry Battalion
**** 3rd Infantry Battalion
*** 29th Infantry Brigade -
**** Headquarters and Service Company, 29th Infantry Brigade
**** 1st Infantry Battalion
**** 2nd Infantry Battalion
**** 3rd Infantry Battalion
*** 9th Artillery Brigade -
**** Headquarters and Service Battery, 9th Artillery Brigade
**** 9th Field Artillery Regiment
**** 19th Field Artillery Regiment
**** 109th Field Artillery Regiment
*** Service Support Brigade -
**** Headquarters and Service Company
**** Medical Regiment
**** Maintenance Regiment
**** Transportation Regiment
**** Detachment, Service Support Brigade, 9th Infantry Division
*** 9th Engineer Regiment
*** 9th Signal Regiment
*** 19th Cavalry Regiment
*** 9th Army Aviation Company
*** 9th Long Range Reconnaissance Company
*** 2nd Field Military Police Company, 12th Military Police Regiment
*** Fort Surasi Hospital
*** Light Ordnance Division
*** Quartermaster Division
** 11th Infantry Division -
*** Headquarters and Service Company, 11th Infantry Division
*** 111th Infantry Brigade -
**** Headquarters and Service Company, 111th Infantry Brigade
**** 1st Infantry Battalion
**** 2nd Infantry Battalion
**** 3rd Infantry Battalion
*** 112th Mechanised Infantry Brigade -
**** Headquarters and Service Company, 112th Infantry Brigade
**** Heavy Mortar Company
**** Reconnaissance and Surveillance Company
**** 1st Mechanised Infantry Battalion
**** 2nd Mechanised Infantry Battalion
**** 3rd Mechanised Infantry Battalion
*** Service Support Brigade, 11th Infantry Division -
**** Maintenance Regiment, Service Support Brigade, 11th Infantry Division -
** 2nd Cavalry Division, King's Royal Guard -
*** Headquarters and Service Squadron, 2nd Cavalry Division, King's Royal Guard
*** 1st Armoured Brigade, King Mongkutklao's Guard
**** Headquarters and Service Troop, 1st Cavalry Brigade, King's Royal Guard
**** 1st Armoured Regiment, 1st Cavalry Brigade, King's Royal Guard
**** 3rd Armoured Regiment, 1st Cavalry Brigade, King's Royal Guard
**** 17th Armoured Regiment, 1st Cavalry Brigade, King's Royal Guard
*** 4th Armoured Brigade, King's Royal Guard -
**** Headquarters and Service Squadron, 4th Armoured Brigade, King's Royal Guard
**** 5th Armoured Regiment, 4th Armoured Brigade, King's Royal Guard
**** 11th Armoured Regiment, 4th Armoured Brigade, King's Royal Guard
**** 25th Armoured Regiment, 4th Armoured Brigade, King's Royal Guard
*** 5th Armoured Brigade, King's Royal Guard -
**** Headquarters and Service Troop, 5th Armoured Brigade, King's Royal Guard
**** 20th Armoured Regiment, 5th Armoured Brigade, King's Royal Guard
**** 23rd Armoured Regiment, 5th Armoured Brigade, King's Royal Guard
**** 24th Armoured Regiment, 5th Armoured Brigade, King's Royal Guard
*** 27th Cavalry Regiment, King's Royal Guard
*** 29th Cavalry Regiment, King's Royal Guard -
*** 12th Signal Regiment, King's Royal Guard, 2nd Cavalry Division, King's Royal Guard -
*** 12th Service Support Brigade -
**** Maintenance Regiment
***** 1st Forward Division Support Company -
***** 2nd Forward Division Support Company -
*** 12th Quartermaster Division, 2nd Cavalry Division, King's Royal Guard
*** Airfield Service and Control Tower Team 8, 2nd Cavalry Division, King's Royal Guard
* Combat Service Support Division -
** 1st Army Combat Service Support Command -
*** 21st Logistics and Service Regiment, 1st Army Combat Service Support -
*** 21st Maintenance Regiment, 1st Army Combat Service Support -
*** 21st Ordnance Ammunition Depot Regiment, 1st Army Combat Service Support -
*** Logistics Control Centre, 1st Army Combat Service Support -
*** Detachment, 1st Army Combat Service Support -
* Army Area Division -
** 11th Military Circle -
*** 11th Military Police Regiment
*** Band Platoon, 11th Military Circle
*** Infantry Battalion, 11th Military Circle
*** Military Prison, 11th Military Circle
** 12nd Military Circle -
*** 12th Military Police Regiment
*** Army Reserve Training Center, 12nd Military Circle -
*** Band Platoon, 12th Military Circle
*** Military Prison, 12th Military Circle
** 13rd Military Circle -
*** 13rd Military Police Regiment
*** Army Reserve Training Center, 13nd Military Circle -
*** Band Platoon, 13rd Military Circle
*** Military Prison, 13rd Military Circle
** 14th Military Circle -
*** 14th Military Police Regiment
*** Army Reserve Training Center, 14th Military Circle -
*** Band Platoon, 14th Military Circle
*** Military Prison, 14th Military Circle
** 15th Military Circle -
*** 15th Military Circle Regiment-
*** 15th Military Police Regiment
*** Army Reserve Training Unit, 15th Military Circle -
*** Band Platoon, 15th Military Circle
*** Military Prison, 15th Military Circle
** 16th Military Circle -
*** 16th Military Police Regiment
*** Army Reserve Training Unit, 16th Military Circle -
*** Band Platoon, 16th Military Circle
*** Military Prison, 16th Military Circle
**17th Military Circle -
*** 17th Military Police Regiment
*** Army Reserve Training Unit, 17th Military Circle -
*** Band Platoon, 17th Military Circle
*** Military Prison, 17th Military Circle
** 18th Military Circle -
*** 18th Military Police Regiment
*** Army Reserve Training Unit, 18th Military Circle -
*** Band Platoon, 18th Military Circle
*** Military Prison, 18th Military Circle
** 19th Military Circle -
*** 19th Military Police Regiment
*** Army Reserve Training Unit, 19th Military Circle -
*** Band Platoon, 19th Military Circle
*** Military Prison, 19th Military Circle
* Development Country Division
** 1st Development Division -
*** Headquarters and Service Company, 1st Development Division
*** 1st Development Brigade -
**** 1st Development Regiment -
*** 1st Engineer Brigade, King's Guard -
**** 52nd Engineer Regiment, King's Royal Guard -
**** 112nd Engineer Regiment, King's Royal Guard -
2nd Army Area – headquartered in Nakhon Ratchasima and is responsible for the northeastern quadrant.
* Headquarters and Headquarters Company, 2nd Army Area
* Headquarters and Headquarters Company, 2nd Army Corps
* 2nd Special Operations Training Company
* 22nd Signal Corps Battalion, 2nd Army Area
* 21st Ranger Forces Regiment
* 22nd Ranger Forces Regiment
* 23rd Ranger Forces Regiment
* 26th Ranger Forces Regiment
* 3rd Infantry Division -
** Headquarters and Headquarters Company, 3rd Infantry Division
** 3rd Infantry Brigade -
*** Headquarters and Service Company
*** 1st Infantry Battalion
*** 2nd Infantry Battalion
*** 3rd Infantry Battalion
** 8th Infantry Brigade -
*** Headquarters and Service Company
*** 1st Infantry Battalion
*** 2nd Infantry Battalion
*** 3rd Infantry Battalion
** 13th Infantry Brigade -
*** Headquarters and Service Company
*** 1st Infantry Battalion
*** 2nd Infantry Battalion
*** 3rd Infantry Battalion
** 3rd Artillery Brigade -
*** Headquarters and Service Battery
*** 3rd Artillery Regiment
*** 8th Artillery Regiment
*** 13th Artillery Regiment
*** 103rd Artillery Regiment
** 3rd Cavalry Squadron -
** 8th Armoured Regiment -
** 3rd Engineer Regiment -
** 3rd Medical Regiment -
** 3rd Signal Regiment -
** 3rd Long Range Reconnaissance Company -
** Ordinance Company, 3rd Infantry Division -
** 1st Field Military Police Company, 21st Military Police Regiment -
** Airfield Service and Control Tower Team 3, 3rd Infantry Division -
* 6th Infantry Division -
** Headquarters and Headquarters Company, 6th Infantry Division
** 6th Infantry Brigade -
*** Headquarters and Service Company
*** 1st Infantry Battalion
*** 2nd Infantry Battalion
*** 3rd Infantry Battalion
** 16th Infantry Brigade -
*** Headquarters and Service Company
*** 1st Infantry Battalion
*** 2nd Infantry Battalion
*** 3rd Infantry Battalion
** 23rd Infantry Brigade -
*** Headquarters and Service Company
*** 1st Infantry Battalion
*** 3rd Infantry Battalion
*** 4th Infantry Battalion
** 6th Artillery Brigade -
*** Headquarters and Service Battery
*** 6th Artillery Regiment
*** 16th Artillery Regiment
*** 23rd Artillery Regiment
*** 106th Artillery Regiment
** 6th Cavalry Squadron -
** 21st Armoured Regiment -
** 6th Anti-tank Company -
** 6th Engineer Regiment -
** 6th Signal Regiment -
** 6th Medical Regiment -
** 6th Long Range Reconnaissance Company -
** Ordnance Company, 6th Infantry Division
** Quartermaster Company, 6th Infantry Division
** 2nd Field Military Police Company, 21st Military Police Regiment -
** Airfield Service and Control Tower Team 6, 6th Infantry Division
* 3rd Cavalry Division -
** Headquarters and Service Squadron, 3rd Cavalry Division
** 6th Armoured Brigade -
*** Headquarters and Service Squadron
*** 6th Armoured Regiment, 6th Armoured Regiment -
** 7th Armoured Brigade -
*** Headquarters and Service Squadron
*** 14th Armoured Regiment, 7th Armoured Brigade -
* 2nd Army Support Command -
** Headquarters and Service Company, 2nd Army Support Command
** Logistics Control Centre, 2nd Army Support Command -
** 22nd Logistic and Service Regiment-
** 22nd Supply and Service Regiment-
** 22nd Maintenance Regiment, 2nd Army Support Command -
** 22nd Ordnance Ammunition Regiment, 2nd Army Support Command -
** 22nd Transportation Regiment, 2nd Army Support Command -
** 22nd Medical Regiment, 2nd Army Support Command -
* 2nd Development Division -
** Headquarters and Service Company, 2nd Development Division
** 2nd Development Brigade -
*** Headquarters and Headquarters Company
*** 2nd Development Regiment-
** 2nd Engineer Brigade -
*** Headquarters and Service Company
*** 201st Engineer Regiment -
*** 202nd Engineer Regiment -
*** Support Division, 2nd Engineer Regiment -
**** 1st Equipment Company, Support Division, 2nd Engineer Regiment -
* Military Districts -
** 21st Military District -
*** Infantry Battalion, 21st Military District
*** 21st Military Police Regiment
*** Band Platoon, 21st Military District
*** Reserve Officer Training Centre, 21st Military District
*** Military Prison, 21st Military District
** 22nd Military District -
*** 22nd Military District Company
*** Military Police Company, 22nd Military District
*** Band Platoon, 22nd Military District
*** Reserve Officer Training Centre, 22nd Military District
*** Military Prison, 22nd Military District
** 23rd Military District -
*** 23rd Military District Battalion
*** Military Police Company, 23rd Military District
*** Band Platoon, 23rd Military District
*** Reserve Officer Training Centre, 23rd Military District
*** Military Prison, 23rd Military District
** 24th Military District-
*** 24th Military District Company
*** Military Police Company, 24th Military District
*** Band Platoon, 24th Military District
*** Reserve Officer Training Centre, 24th Military District
*** Military Prison, 24th Military District
** 25th Military District -
*** 25th Military District Company
*** Military Police Company, 25th Military District
*** Band Platoon, 25th Military District
*** Reserve Officer Training Centre, 25th Military District
** 26th Military District -
*** 26th Military District Company
*** Military Police Company, 26th Military District
*** Band Platoon, 26th Military District
*** Reserve Officer Training Centre, 26th Military District
** 27th Military District -
*** 27th Military District Company
*** Military Police Company, 27th Military District
*** Band Platoon, 27th Military District
*** Reserve Officer Training Centre, 27th Military District
** 28th Military District-
*** 28th Military District Company
*** Military Police Company, 28th Military District
*** Band Platoon, 28th Military District
*** Reserve Officer Training Centre, 28th Military District
** 29th Military District -
*** 29th Military District Company
*** Military Police Company, 29th Military District
*** Band Platoon, 29th Military District
*** Reserve Officer Training Centre, 29th Military District
** 210th Military District -
*** 210th Military District Company
*** Military Police Company, 210th Military District
*** Reserve Officer Training Centre, 210th Military District
3rd Army Area – headquartered in Phitsanulok, responsible for the northern and northwestern parts of the kingdom.
** Headquarters and Service Company, 3rd Army Area
** Headquarters and Service Company, 3rd Army Corps
** 3rd Special Operations Training Company
** 23rd Signal Battalion, 3rd Army Area
** 31st Ranger Forces Regiment
** 32nd Ranger Forces Regiment
** 33rd Ranger Forces Regiment
** 35th Ranger Forces Regiment
** 36th Ranger Forces Regiment
* 4th Infantry Division -
** Headquarters and Headquarters Company, 4th Infantry Division
** 4th Infantry Brigade -
*** Headquarters and Headquarters Company
*** 1st Infantry Battalion
*** 2nd Infantry Battalion
*** 3rd Infantry Battalion
** 7th Infantry Brigade -
*** Headquarters and Headquarters Company
*** 1st Infantry Battalion
*** 2nd Infantry Battalion
*** 3rd Infantry Battalion
** 14th Infantry Brigade -
*** Headquarters and Headquarters Company
*** 1st Infantry Battalion
*** 2nd Infantry Battalion
*** 3rd Infantry Battalion
** 4th Artillery Brigade -
*** Headquarters and Service Battery
*** 4th Artillery Regiment
*** 7th Artillery Regiment
*** 17th Artillery Regiment
*** 104th Artillery Regiment
** 4th Cavalry Squadron -
** 9th Armoured Regiment -
** 4th Engineer Regiment -
** 4th Medical Regiment -
** 4th Signal Regiment -
** 4th Long Range Reconnaissance Company -
** Ordnance Company, 4th Infantry Division
** Quartermaster Company, 4th Infantry Division
** Airfield Service and Control Tower Team 4, 4th Infantry Division
* 7th Infantry Division -
** Headquarters and Service Company, 7th Infantry Division
** 17th Infantry Brigade -
*** Headquarters and Service Company
*** 2nd Infantry Battalion
*** 3rd Infantry Battalion
*** 4th Infantry Battalion
* 1st Cavalry Division -
** 12th Cavalry Regiment, 1st Cavalry Division -
** 28th Cavalry Regiment, 1st Cavalry Division -
** 2nd Armoured Brigade -
*** Headquarters and Service Squadron
*** 7th Armoured Regiment, 2nd Armoured Brigade -
*** 10th Armoured Cavalry Regiment, 2nd Armoured Brigade -
*** 15th Armoured Cavalry Regiment, 2nd Armoured Brigade -
** 3rd Armoured Brigade -
*** Headquarters and Service Squadron
*** 13th Armoured Regiment, 3rd Armoured Brigade -
*** 18th Armoured Regiment, 3rd Armoured Brigade -
*** 26th Armoured Regiment, 3rd Armoured Brigade -
** 21st Artillery Brigade -
*** Headquarters and Service Battery
*** 20th Artillery Regiment
*** 30th Artillery Regiment
** 8th Engineer Regiment -
** 11th Signal Regiment -
** Long Range Reconnaissance Company, 1st Cavalry Division
** Ordnance Company, 1st Cavalry Division
*** 1st Forward Maintenance Platoon, Ordnance Company
*** 2nd Forward Maintenance Platoon, Ordnance Company
** Quartermaster Company, 1st Cavalry Division
** 2nd Field Military Police Company, 31st Military Police Regiment
** Airfield Service and Control Tower Team 7, 1st Cavalry Division
* 3rd Army Support Command -
** Headquarters and Service Company, 3rd Army Support Command
** Logistics Control Centre, 3rd Army Support Command
** 23rd Supply and Service Regiment, 3rd Army Support Command -
** 23rd Maintenance Regiment, 3rd Army Support Command -
** 23rd Ordnance Ammunition Regiment, 3rd Army Support Command -
** 23rd Transportation Regiment, 3rd Army Support Command -
** 23rd Medical Regiment, 3rd Army Support Command -
* 3rd Development Division -
** Headquarters and Service Company of 3rd Development Division
** 3rd Engineer Brigade -
*** 301st Engineer Regiment-
*** 302nd Engineer Regiment-
*** 3rd Development Regiment-
*** Support Division, 3rd Engineer Brigade -
**** 1st Equipment Company, Support Division, 3rd Engineer Brigade
* Military Districts -
** 31st Military District -
*** 31st Military District Company
*** Military Police Company, 31st Military District
*** Band Platoon, 31st Military District
*** Reserve Officer Training Centre, 31st Military District
*** Military Prison, 31st Military District
** 32nd Military District -
*** 32nd Military District Company
*** Military Police Company, 32nd Military District
*** Band Platoon, 32nd Military District
*** Reserve Officer Training Centre, 32nd Military District
*** Military Prison, 32nd Military District
** 33rd Military District -
*** 33rd Military District Battalion
*** Military Police Company, 33rd Military District
*** Band Platoon, 33rd Military District
*** Reserve Officer Training Centre, 33rd Military District
*** Military Prison, 33rd Military District
** 34th Military District -
*** 34th Military District Company
*** Military Police Company, 34th Military District
*** Band Platoon, 34th Military District
*** Reserve Officer Training Centre, 34th Military District
** 35th Military District -
*** 35th Military District Company
*** Military Police Company, 35th Military District
*** Band Platoon, 35th Military District
*** Reserve Officer Training Centre, 35th Military District
** 36th Military District -
*** 36th Military District Company
*** Military Police Company, 36th Military District
*** Band Platoon, 36th Military District
*** Reserve Officer Training Centre, 36th Military District
** 37th Military District -
*** 37th Military District Company
*** Military Police Company, 37th Military District
*** Band Platoon, 37th Military District
*** Reserve Officer Training Centre, 37th Military District
** 38th Military District -
*** 38th Military District Company
*** Military Police Company, 38th Military District
*** Band Platoon, 38th Military District
*** Reserve Officer Training Centre, 38th Military District
** 39th Military District -
*** 39th Military District Company
*** 31st Military Police Regiment
*** Band Platoon, 39th Military District
*** Reserve Officer Training Centre, 39th Military District
** 310th Military District -
*** 310th Military District Company
*** Military Police Company, 310th Military District
*** Band Platoon, 310th Military District
*** Reserve Officer Training Centre, 310th Military District
Fouth Army Area - – headquartered in Nakhon Si Thammarat, responsible for southern Thailand, it is the area that serves as the frontine command for those engaged in South Thailand insurgency. Leaked diplomatic cables from 2006 said: "Military forces totaling approximately 35,000 troops fall under the command of the 4th Army....the 5th Inf Div and the 15th Development Division totaling approximately 20,000 troops are the main units of the 4th Army."
* Organic Units -
** 4th Army Corps
* Command Division -
* 24th Signal Regiment, 4th Army Area
* Combat Division -
** Fouth Army Area Operations Center -
*** Thepsatri Command aka Thepsatri Task Force -
**** Civil Affairs Branch
**** Finance Branch
**** Logistic Branch
**** Military Intelligence Unit
**** National Defense Volunteer -
**** Operation Plans Branch
**** Personnel Branch
**** Quick Reaction Force Company
**** Signal Corps Team
**** 49th Ranger Forces Regiment -
*** Suriyothai Command aka Suriyothai Task Force -
** 4th Special Forces Training Company -
** 41st Ranger Forces Regiment -
** 42nd Ranger Forces Regiment -
** 43rd Ranger Forces Regiment -
** 44th Ranger Forces Regiment -
** 45th Ranger Forces Regiment -
** 46th Ranger Forces Regiment -
** 47th Ranger Forces Regiment -
** 48th Ranger Forces Regiment -
** 5th Infantry Division - –
*** Headquarters and Service Company, 5th Infantry Division
*** 5th Infantry Brigade -
**** Headquarters and Service Company, 5th Infantry Brigade
**** 1st Infantry Battalion
**** 2nd Infantry Battalion
**** 3rd Infantry Battalion
*** 15th Infantry Brigade -
**** Headquarters and Service Company, 15th Infantry Brigade
**** 1st Infantry Battalion
**** 2nd Infantry Battalion
**** 4th Infantry Battalion
*** 25th Infantry Brigade -
**** Headquarters and Service Company, 25th Infantry Brigade
**** 1st Infantry Battalion
**** 2nd Infantry Battalion
**** 3rd Infantry Battalion
*** 5th Artillery Brigade -
**** Headquarters and Service Battery, 5th Artillery Brigade
**** 5th Artillery Regiment
**** 15th Artillery Regiment
**** 25th Artillery Regiment
**** 105th Artillery Regiment
*** 5th Engineer Regiment -
*** 16th Cavalry Regiment -
*** 5th Medical Regiment -
*** 5th Signal Regiment -
*** 5th Long Range Reconnaissance Company -
*** Light Ordnance Division
*** Quartermaster Division
*** Airfield Service and Control Tower Team 5
** 15th Infantry Division - –
*** Headquarters and Service Company, 15th Infantry Division
*** 151st Infantry Brigade -
**** Headquarters and Service Company, 151st Infantry Brigade
**** 1st Infantry Battalion
**** 2nd Infantry Battalion
**** 3rd Infantry Battalion
*** 152nd Infantry Brigade -
**** Headquarters and Service Company, 152nd Infantry Brigade
**** 1st Infantry Battalion
**** 2nd Infantry Battalion
**** 3rd Infantry Battalion
*** 153rd Infantry Brigade -
**** Headquarters and Service Company, 153nd Infantry Brigade
**** 1st Infantry Battalion
**** 2nd Infantry Battalion
**** 3rd Infantry Battalion
*** Service Support Brigade, 15th Infantry Division -
**** Headquarters and Service Company
**** Combat Medical Regiment
**** Logistic and Service Regiment
**** Maintenance Regiment
**** Psychological Operations Company
*** 15th Engineer Regiment -
*** 15th Military Intelligence Regiment -
*** 15th Signal Regiment -
*** 31st Cavalry Regiment -
*** 15th Long Range Reconnaissance Company -
* Combat Service Support Division -
** 4th Army Combat Service Support Command -
*** 24th Logistics and Service Regiment, 4th Army Combat Service Support -
*** 24th Maintenance Regiment, 4th Army Combat Service Support -
*** 24th Medical Supplies Depot, 4th Army Combat Service Support
*** 24th Ordnance Ammunition Depot Regiment, 4th Army Combat Service Support -
*** Logistics Control Centre, 4th Army Combat Service Support -
*** Detachment, 4th Army Combat Service Support -
* Army Area Division -
** 41st Military Circle -
*** 41st Military Police Regiment
*** Army Reserve Training Center, 41st Military Circle -
*** Band Platoon, 41st Military Circle
*** Military Prison, 41st Military Circle
** 42nd Military Circle -
*** 42nd Military Circle Regiment
*** 42nd Military Police Regiment
*** Army Reserve Training Center, 42nd Military Circle -
*** Band Platoon, 42nd Military Circle
*** Military Prison, 42nd Military Circle
** 43rd Military Circle -
*** Army Reserve Training Unit, 43rd Military Circle -
*** Band Platoon, 43rd Military Circle
*** Military Police Company, 43rd Military Circle
*** Military Prison, 43rd Military Circle
** 44th Military Circle -
*** Army Reserve Training Unit, 44th Military Circle -
*** Band Platoon, 44th Military Circle
*** Military Police Company, 44th Military Circle
*** Military Prison, 44th Military Circle
** 45th Military Circle -
*** Army Reserve Training Unit, 45th Military Circle -
*** Band Platoon, 45th Military Circle
*** Military Police Company, 45th Military Circle
*** Military Prison, 45th Military Circle
** 46th Military Circle -
*** Army Reserve Training Unit, 46th Military Circle -
*** Band Platoon, 46th Military Circle
*** Military Police Company, 46th Military Circle
*** Military Prison, 46th Military Circle
* Development Country Division
**4th Development Division - – US State Department cables leaked by Wikileaks in 2006 said: "The Development Division is itself a traditionally 'static unit' that provides engineering, construction and other support to local communities in the South. It is not formally charged with security operations. Indeed, Development Division officers were very proud in stating that they have better relations with the locals than other security elements — and have not been attacked while engaged in construction or relief efforts."
*** Headquarters and Service Company, 4th Development Division
*** 4th Development Brigade -
**** 4th Development Regiment-
*** 401 Engineer Regiment -
*** 402 Engineer Regiment -
Royal Thai Army Special Warfare Command also known as Royal Thai Army Special force – headquartered in Thale Chup Son, Mueang Lopburi, Lopburi
* Psychological Operations Regiment
** Headquarters and Service Company
** 1st Psychological Operations Company
** 2nd Psychological Operations Company
** 3rd Psychological Operations Company
** Army Psychological Operations Company -
** Communication Media Production Company -
** Psychological Operations Campaign Company -
* Quartermaster Aerial Supply Company -
* Special Warfare Centre
** Headquarters and Service Company, Special Warfare Centre
** Special Warfare Battalion, Special Warfare Centre
** Special Warfare School, Special Warfare Centre -
*** Airborne Training Center
*** Basic Training School
*** Psychological Operations Training Center
*** Ranger Training Center
*** Special Force Training Center
*** Special Warfare School Battalion, Special Warfare Centre -
* Special Warfare Medical Center -
* 35th Signal Corps Battalion, Special Warfare Command
* 1st Special Forces Division -
** 1st Special Forces Regiment -
*** Headquarters and Service Company, 1st Special Forces Regiment
*** 1st Special Forces Battalion, 1st Special Forces Regiment
*** 2nd Special Forces Battalion, 1st Special Forces Regiment
** 2nd Special Forces Regiment -
*** Headquarters and Service Company, 2nd Special Forces Regiment
*** 1st Special Forces Battalion, 2nd Special Forces Regiment
*** 2nd Special Forces Battalion, 2nd Special Forces Regiment
** 3rd Special Forces Regiment, King's Royal Guard -
*** Ranger Battalion, 3rd Special Forces Regiment, King's Guard also known as Royal Thai Army Ranger -
**** Ranger Battalion Headquarters
**** 1st Ranger Company
**** 2nd Ranger Company
**** 3rd Ranger Company
*** Special Operations Battalion, 3rd Special Forces Regiment, King's Guard also known as Task Force 90 -
** 4th Special Forces Regiment -
*** Headquarters and Service Company, 4th Special Forces Regiment
*** 1st Special Forces Battalion, 4th Special Forces Regiment
*** 2nd Special Forces Battalion, 4th Special Forces Regiment
** 5th Special Forces Regiment -
*** Headquarters and Service Company, 5th Special Forces Regiment
*** 1st Special Forces Battalion, 5th Special Forces Regiment
*** 2nd Special Forces Battalion, 5th Special Forces Regiment
Artillery Division - – Headquartered in Fort Sirikit, Mueang Lopburi, Lopburi
* Headquarters and Headquarters Battery, Artillery Division
* Target Acquisition Battery
* 71st Artillery Brigade
** Headquarters and Headquarters Battery
** 711th Artillery Regiment
** 712th Artillery Regiment
** 713th Artillery Regiment
* 72nd Artillery Brigade
** Headquarters and Headquarters Battery
** 721st Artillery Regiment
** 722nd Artillery Regiment
** 723rd Artillery Regiment
Army Air Defence Command - - Headquartered in Si Kan, Don Mueang, Bangkok
* Headquarters and Headquarters Battery, Army Air Defence Command
* Air Defence Division - -
** Headquarters and Service Battery, Air Defence Division
** 13th Signal Battalion, Air Defence Division
** Ordnance Company, Air Defence Division
** Quartermaster Company Air Defence Division
** 13th Medical Battalion
** 1st Air Defence Regiment
*** Headquarters and Service Battery
*** 3rd Air Defence Battalion
*** 5th Air Defence Battalion
*** 6th Air Defence Battalion
*** 7th Air Defence Battalion
** 2nd Air Defence Regiment
*** Headquarters and Service Battery
*** 1st Air Defence Battalion
*** 2nd Air Defence Battalion
*** 4th Air Defence Battalion
* Army Air Defence Operations Centre
** 1st Army Air Defence Operations Centre
** 2nd Army Air Defence Operations Centre
** 3rd Army Air Defence Operations Centre
** 4th Army Air Defence Operations Centre
Combat Engineer Division - - Headquartered in Fort Purachatra, Ko Phlappla, Mueang Ratchaburi, Ratchaburi
* Headquarters and Service Company, Engineer Division
** 11th Engineer Brigade
*** Headquarters and Service Company
*** 111th Combat Engineer Regiment
*** 602nd Combat Engineer Regiment
*** Special Equipment Combat Engineer Battalion
** 51st Combat Engineer Regiment
1st Signal Brigade - - Headquartered in Fort Kamphaeng Phet Akkharayothin, Krathum Baen District, Samut Sakhon
* Headquarters and Service Company
* 101st Signal Battalion
* 102nd Signal Battalion
Royal Thai Army Aviation Centre - - Headquartered in Fort Somdej Phra Srinagarindra, Khao Phra Ngam, Mueang Lop Buri District, Lopburi provides aerial transportation to the Royal Thai Army
* Aviation Regiment, Army Aviation Centre -
** Headquarters and Headquarters Company, Aviation Regiment
** 1st Aviation Battalion "Hummingbird"
** 2nd Aviation Battalion "Freebird"
** 3rd Aviation Battalion "Raptor"
** 9th Aviation Battalion "Blackhawk"
** 21st Aviation Battalion "Blackbird"
** 41st Aviation Battalion "Goliath"
* Airbase Defence Regiment -

The creation of the 15th Infantry Division was announced in January 2005. Defence Minister, General Samphan Boonyanan, was quoted as saying that the new unit, dubbed the "Development Division", would not be a combat unit for fighting Islamic militants, but rather its main mission would be to assist local citizens and develop the region. The military will not ignore its general function of providing safety for the citizens of the region, he added. He said that troops for the new division would undergo training to give them a good understanding of local residents, the vast majority of whom are ethnic Malay Muslims. The division is in fact a transformation of the Pranburi-based 16th Infantry Division. It will now be headquartered at Fort Ingkhayutthaborihan in Pattani, complete with its battalions and companies of military police and communications and aviation personnel, he said. It will also have three separate infantry battalions, one each in Pattani, Yala, and Narathiwat. Each battalion will include three companies of medical, engineering, and psychological warfare personnel, he said. The government will allocate a budget of more than 18 billion baht for the division over the next four years.
The 15th Infantry Division is being established as a permanent force to handle security problems in the Deep South. The division is based in Pattani and is expected to have a combined force of around 10,000. The establishment of this new division, approved by the government in 2005, has yet to be completed. As of this writing, some 7,000 troops deployed in the Deep South are affiliated to this division." In 2012, two new combat formations had been approved by the thai government. The new 7th Infantry Division is based at Mae Rim, near Chiang Mai, and the new 3rd Cavalry Division is based at Khon Kaen.