38th Brigade
- 38 Canadian Brigade Group
- 38 Squadron (disambiguation)
- 38th (Irish) Brigade
- 38th Air Defense Artillery Brigade (United States)
- 38th Brigade (United Kingdom)
- 38th Division (disambiguation)
- 38th Guards Air Assault Brigade
- 38th Guards Communications Brigade
- 38th Independent Mixed Brigade (Imperial Japanese Army)
- 38th Indian Infantry Brigade
- 38th Light Anti-Aircraft Brigade (United Kingdom)
- 38th Regiment (disambiguation)
- 38th Sustainment Brigade
- 38th Wing (disambiguation)
- Russian Airborne Forces