A reader pointed me to the best resource on Public Law 402 that I've seen. vLex has all the amendments and includes notes on transformations of the law. See USC 22 - US CODE 22 - US Code - Title 22: Foreign Relations and Intercourse - United States.
By the way, $50 (only USD, no Euros or RMB) to the first person who finds a reference to the Defense Department in the law...
Matt -
I assume someone answered your challenge on finding a reference to the Defense Department in the law? Chapter 2 of Title 10 of the US Code defines the Department of Defense and its composition. Were you asking a question I don't understand?
Kevin Doyle