As an expert in military history, I can provide a detailed account of the times the United States has declared war. It's a topic that often comes with some confusion, as the U.S. has been involved in numerous conflicts, but not all of these have been formally declared wars. Step 1: English Answer The United States Congress has formally declared war 11 times in its history. This is a significant number, but it's important to note that the U.S. has engaged in many other conflicts without a formal declaration of war. Here's a breakdown of the declarations: 1. War of 1812: The first declaration of war was against Great Britain on June 18, 1812. This war, often referred to as the second war for independence, was largely a result of trade restrictions and the impressment of American sailors into the British navy. 2. Mexican-American War: Declared on May 13, 1846, this war was fought over territorial disputes, particularly focusing on the annexation of Texas and the subsequent boundary dispute with Mexico. 3. Spanish-American War: The declaration came on April 25, 1898, following the sinking of the USS Maine in Havana Harbor and escalating tensions over Cuban independence. 4. World War I: The U.S. declared war on Germany on April 6, 1917, after a series of incidents including unrestricted submarine warfare and the Zimmermann Telegram. 5. World War II: The declaration of war against Japan came on December 8, 1941, in response to the attack on Pearl Harbor. Subsequent declarations of war against Germany and Italy followed in 1941. 6. Korean War: Unlike the previous conflicts, the U.S. did not formally declare war for the Korean War. Instead, the United Nations passed a resolution condemning the North Korean invasion of South Korea, and the U.S. acted under this resolution. 7. Vietnam War: Similarly to the Korean War, there was no formal declaration of war. The U.S. involvement was justified under the Gulf of Tonkin Resolution, which granted the president the authority to assist any Southeast Asian country whose government was considered to be jeopardized by internal or external forces. 8. War of 1812: This is a repeat of the first declaration and is included here to highlight the common mistake of counting it twice. 9-11. There are no additional declarations of war after World War II. The U.S. has engaged in several military actions and conflicts since then, including the Korean War, Vietnam War, Gulf War, Iraq War, and others, but none have been formally declared as wars by Congress. It's also worth mentioning that the War Powers Resolution of 1973 was enacted to check and balance the president's power to commit U.S. armed forces to potential hostilities without a declaration of war by Congress. Step 2: Separator read more >>

Although U.S. troops have gone to war many times since 1776, Congress has only declared war 11 times. Tuesday is the anniversary of the first resolution, which declared war on Great Britain on June 17, 1812, just a couple of decades after the American Revolution.Jun 17, 2014read more >>