The United States Army Air Corps was an aviation division of the US Army in the early 20th century. As atmospheric flight became more advanced, this became a separate service, the US Air Force. (DS9: "Little Green Men")
| Militaries of Earth | |||||
|---|---|---|---|---|---|
| Confederate States: | France: | Nazi Germany: | Japan: | Mexico: | Old Britain: |
| Army | Army • Guards | Heer • Luftwaffe • SS | Navy | Army | Air Force • Navy |
| United States of America: | |||||
| Army (Army Air Forces) • Marine Corps (MARDET) • Navy • Air Force (Air Defense Command; Air Materiel Command; Strategic Air Command) • National Guard | |||||
| United Earth: Forces • Military (Military Assault Command Operations) • Defense Force | |||||