U.S. Army Air Force Personnel
Number and Percent of U.S. Army Strength
1912-1945

(Updated 9 February 2013)

Reference:

Army Air Forces Statistical Digest, World War II (December 1945) (PDF Excerpt)

NOTES: I have chosen to highlight the “wartime” years of WWI and WWII in grey on the table below for clarity. For WWII, I start counting from the summer of 1940, because we began a major buildup at that time.

Year

USAAF Manpower

Percent of
US Army Total Strength

1 November 1913

51

0.1

30 September 1913

114

0.1

30 June 1914

122

0.1

30 June 1915

208

0.2

30 June 1916

311

0.3

6 April 1917

1,218

0.6

11 November 1918

195,023

5.3

30 June 1919

25,603

2.7

30 June 1920

9,050

4.5

30 June 1921

11,649

5.1

30 June 1922

9,642

6.5

30 June 1923

9,441

7.2

30 June 1924

10,547

7.4

30 June 1925

9,670

7.1

30 June 1926

9,674

7.2

30 June 1927

10,008

7.5

30 June 1928

10,549

7.8

30 June 1929

12,131

7.8

30 June 1930

13,531

9.8

30 June 1931

14,780

10.6

30 June 1932

15,028

11.2

30 June 1933

15,099

11.1

30 June 1934

15,861

11.5

30 June 1935

16,427

11.7

30 June 1936

17,233

10.3

30 June 1937

19,147

10.7

30 June 1938

21,089

11.5

30 June 1939

23,455

12.4

30 June 1940

51,165

19.1

30 June 1941

152,125

10.4

30 June 1942

764,415

24.9

30 June 1943

2,197,114

31.4

30 June 1944

2,372,292

29.7

30 June 1945

2,282,259

24.1