The United States Marine Corps was a military corps branch of the armed forces service of the United States of America, reporting to the US Department of the Navy. The Marines were used as naval infantry, specializing in fighting on ships and conducting amphibious assaults, and coordinated air/land/sea assaults.
|Militaries of Earth|
|Confederate States of America: Army|
|Germany: Luftwaffe • SS|
|Old Britain: Navy • Air Force|
|United States of America: Army • Navy • Air Force • Marine Corps|
|United Earth: Military Assault Command Operations|