What wars did the US Fight in?
The American Revolutin, Mexican-American War, Civil War, World War 1 and 2, Cold War, Korean War, Vietnam War, and Iraq War.
You're looking for the term "declared" war. The US hasn't fought a declared war since WWII! The reason the US can't fight any declared wars anymore is because of atomic weapons. A declared war implies USING THEM! So.........we fight limited wars now. (Limited to conventional non-nuclear wars only; such as Vietnam).
Because the US Army manages US wars; the US Army has jurisdiction over land wars. USAF & USN SUPPORT the US Army. The US Army always preferred to study Europe for future wars; the US Army absolutely did not want to fight any Asian Wars. Money (Defense Budgets) were 99% allocated for European Wars. Asia represented a dirty filthy ruthless war fought without mercy. Europe represented chivalry and the fine art of hi-tech weapons.