https://www.youtube-nocookie.com/embed/uA88OFEPoC0
See also:
The Economics of War
How War Leads to Big Government
Further reading:
The Neglected Costs of the Warfare State: An Austrian Tribute to Seymour Melman by Thomas E. Woods, Jr
War and the Money Machine: Concealing the Costs of War beneath the Veil of Inflation by Joseph T. Salerno (Chapter 9 in Money: Sound and Unsound)
Imperialism and the Logic of War Making by Joseph T. Salerno
Depression, War, and Cold War: Studies in Political Economy by Robert Higgs
Crisis and Leviathan: Critical Episodes in the Growth of American Government by Robert Higgs