Number of Soldiers Serving

Year	Army*	Marines	Navy	Total
1939	189,839	19,432	125,202	334,473
1940	269,023	28,345	160,997	458,365
1941	1,462,315	54,359	284,427	1,801,101
1942	3,075,608	142,613	640,570	3,858,791
1943	6,994,472	308,523	1,741,750	9,044,745
1944	7,994,750	475,604	2,981,365	11,451,719
1945	8,267,958	474,680	3,380,817	12,123,455

* The United States Army and Air Force were combined at this time, only until after WWII were they split.