How many in us military in World War 2?

Answer 1

There were sixteen million Americans in uniform in WWII. This was ten per cent of the population at the time, and the maximum it was believed an industrial nation could put into the military before hurting industrial production. Over eight million were in the US Army, and over three million more were in the US Army Air Force (the Air Force did not become an independent branch of the service until 1947). Over three million were in the US Navy, and over 700,000 were in the US Marine Corps.

Answer 2

Sixteen million, which was ten per cent of the population. It was estimated by the war planners in the War Department that this was the maximum that could be taken into the military in a modern industrial nation without beginning to harm production of war materials.

Over eight million served in the US Army. The Air Force was a part of the Army then, and over three million served in the US Army Air Force. About three million served in the navy. The Marine Corps was, and is, a part of the US Navy. There were over seven hundred thousand Marines.

Answer 3

16.1 million U.S. armed forces personnel served in WWII.