This resource, produced by KQED's The Lowdown, examines the long history of solemn national presidential declarations of war, or authorizations of similar military action. Since World War II, America’s increasingly powerful military has had a consistent involvement in conflicts around the world. In little over half-a-century, we’ve fought five all-out wars (Korea, Vietnam, Iraq, Afghanistan, Iraq part 2) and been involved in many more smaller military invasions.