During the Civil War and the two World Wars it was called the War Department till changes were made in 1947-1949. The US Navy was independent of the Army and operated independently. Harry Truman changed this in 1947.Since then the US has been on the back foot even in its on backyard, where once the Monroe Doctrine made clear that colonial powers had no place in this hemisphere, today even in places like Venezuela and central America regimes operate against the interests of their people and create a massive refugee problem for the United States of America and other countries in the neighborhood. The USA was also on the back foot in the Korean and Vietnam Wars, and after prematurely declaring victory in the Cold War finds that nothing of the sort of a win in the Cold War happened, as the adversaries in the Cold War reassert their interests. And the US faces crises of refugees and on its borders, Europe faces crises of refugees and on its borders. ...