24th Regiment
- 19th and 24th Consolidated Arkansas Infantry Regiment
- 24 Commando Regiment (United Kingdom)
- 24th Arkansas Infantry Regiment
- 24th Connecticut Infantry Regiment
- 24th Field Artillery Regiment (Canada)
- 24th Field Artillery Regiment (United States)
- 24th Illinois Volunteer Infantry Regiment
- 24th Indiana Infantry Regiment
- 24th Infantry Regiment (United States)
- 24th Iowa Volunteer Infantry Regiment
- 24th Marine Regiment (United States)
- 24th Michigan Volunteer Infantry Regiment
- 24th New York Volunteer Infantry Regiment
- 24th Punjabis
- 24th Regiment Grey's Horse
- 24th Regiment of (Light) Dragoons
- 24th Regiment of Bengal Native Infantry
- 24th Regiment of Foot
- 24th Tennessee Infantry Regiment
- 24th Wisconsin Volunteer Infantry Regiment
- Canadian Army