From the invaluable Robert Samuelson:
In 1954 defense accounted for 69.5 percent of federal spending and "human resources" (programs such as Social Security, Medicare, job training and food stamps) only 18.5 percent. In 2005 defense was 20 percent and human resources 64.2 percent.
Forget the military-industrial complex. Our new threat is the senior-entitlement complex.