Cavalry Stetson

The Cavalry Stetson is a cavalry traditional headgear within the United States Army, typical worn by cavalrymen in the late 1860s, named after its creator John B. Stetson.
In the modern U.S. Army, the Stetson was revived as an unofficial headgear for the sake of esprit de corps in the cavalry. Because they are not authorized by AR 670–1, wear and use of the Stetson and associated spurs is regulated by a unit commander. What follows is one example of a cavalry squadron's policy on the wear of Stetsons:
File:Flickr - The U.S. Army - Medal of Honor, Maj. Bruce Crandall.jpg|thumb|LTC Bruce P. Crandall wearing Stetson with gold and black cord during his Medal of Honor ceremony at the White House, 2008
File:11th Armored Cavalry Regiment Brown Campaign Stetson.jpg|thumb|350px|CSM James Gandy and SGM Reginald Parham wear their brown campaign covers at the 11th Armored Cavalry Regiment’s Change of Responsibility ceremony
The 11th Armored Cavalry Regiment is an exception to this, in that they wear the brown Boss of the Plains campaign cover, but styled like a Stetson hat. This tradition is to honor their original uniforms from 1901 when the unit was formed.
Colored cords worn on the Stetson have evolved and expanded since their introduction in 1851. Below is a list of known cord colors and what they signified from 1851 through 1943:

Branch	Primary Color	Secondary Color	Established
Adjutant General	Dark Blue	Scarlet	1936
Air Corps	Ultramarine	Golden Orange	1920
Armored	Green	White	1942
Cavalry	Yellow		1855
Chaplains	Black		-
Chemical Warfare	Cobalt Blue	Golden Yellow	1918
Coast Artillery	Scarlet		1902
Detached Enlisted Men	Green		-
Field Artillery	Scarlet		1851
Finance	Silver Gray	Golden Yellow	1921
Infantry	Light Blue		1851
Inspector General	Dark Blue	Light Blue	1936
Judge Advocate General	Dark Blue	White	1936
Medical Department	Maroon	White	1916
Military Intelligence	Golden Yellow	Purple	1936
Military Police	Yellow	Green	1922
National Guard Bureau	Dark Blue		1921
Ordnance	Crimson	Yellow	1921
Permanent Professor	Scarlet	Silver Gray	1936
Quartermaster	Buff		1902
Signal	Orange	White	1902
Specialists' Reserve	Brown	Golden Yellow	1936
Tank Destroyer	Golden Orange	Black	1943
Transportation	Brick Red	Golden Yellow	1942
Warrant Officers	Brown		1936
Women's Army Corps	Old Gold	Moss Green	1942

On April Fools' Day, 2011, the U.S. Army released a humorous statement that the official black beret of the Army would be replaced by stetsons. Below is an excerpt from the full announcement:
The statement was supplemented by pictures of soldiers with Cavalry Hats photoshopped over their berets, including a military working dog toting a stetson.