Lists of wars involving the United States
This is an index of lists detailing military conflicts involving the United States, organized by time period.
Although the United States has formally declared war only five times and these declarations cover a total of 11 separate instances against specific nations, there are currently 195 non-colonial military conflicts included in these lists, seven of which are ongoing. Between all six lists, there are currently 233 military conflicts.
Formal declarations of war include the War of 1812, the Mexican–American War, the Spanish–American War, World War I and World War II.
Since World War II, the U.S. has engaged in numerous military operations authorized by Congress or initiated by the executive branch without formal declarations of war; notable examples include the Cold War and the war on terror.
As of the current date, the United States is involved in 7 publicly known military engagements across 5 different wars. Wars with direct U.S. involvement include war on terror and the war on cartels. Wars with indirect U.S. involvement include the Russo-Ukrainian War, the Gaza War, and the Israel–Hezbollah conflict.