The Terran Federation Army is a branch of the Terran Federation military.
- Squad: nine soldiers led by a sergeant.
- Platoon: Three squads led by a lieutenant
- Company: four platoons led by a captain.
- Battalion: four companies led by a major.
- Regiment: four battalions led by a regimental commander.
- Legion/Brigade: four regiments led by a commander
- Corps: four legions led by a marshal commander.