Defense spending and troop levels after major U.S. wars

For post-World War II era defense spending, we used a historical table from the Office of Management and Budget -- -- and adjusted it for inflation using 1945 dollars using this calculator --

Post-World War II
1945: $83 billion
1948: $7 billion
Spending decline: 92 percent

For the rest of the wars, we used a data set compiled by Todd Harrison of the Center for Strategic and Budgetary Assessments that includes inflation-adjusted defense spending from 1946 to 2012.

1952: $484 billion
1955: $227 billion
Spending decline: 53 percent

1968: $409 billion
1975: $302 billion
Spending decline: 26 percent

Post-Cold War
1987: $507 billion
1996: $364 billion
Spending decline: 28 percent

For worldwide troop levels, we turned to a data set -- -- produced by Tim Kane that covers the years 1950 to 2005. Kane compiled the numbers for the conservative Heritage Foundation and now is a senior fellow at the Ewing Marion Kauffman Foundation. We used the same criteria for picking the years, which in some cases resulted in different years being selected.

1953: 3.56 million troops
1958: 2.60 million troops
Troop decline: 27 percent

1968: 3.49 million troops
1978: 2.06 million troops
Troop decline: 40 percent

Post-Cold War
1987: 2.17 million troops
1996: 1.47 million troops
Troop decline: 32 percent

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