United States Army North was created in 1943.
United States Army was created in 1775.
United States Army Central was created in 1918.
Fourth United States Army was created in 1932.
Sixth United States Army was created in 1943.
United States Army Europe was created in 1952.
Eighth United States Army was created in 1944.
Ninth United States Army was created in 1944.
First United States Army was created in 1918.
Fifteenth United States Army was created in 1944.
United States Army Berlin was created in 1961.
Second United States Army was created in 1918.
North Vietnamese Air Force vs US Air Force and US Navy air units. North Vietnamese Army vs US Army, US Marines, ARVN, Australian Army, ROKs, etc.