1846: Three days after Gen. Zachary Taylor’s forces defeat the Mexican Army in the Battle of Palo Alto, Pres. James K. Polk tells Congress: “Mexico has passed the boundary of the United States, has invaded our territory and shed American blood upon American soil.”
The Mexican-American War – already underway – is formally declared within two days.
1864: During the Battle of Yellow Tavern, Confederate Maj. Gen. J.E.B. Stuart is shot by a dismounted Union cavalry trooper north of Richmond, Va. “The greatest cavalry officer ever foaled in America” is mortally wounded and will die the next day.

Confederate General J.E.B. Stuart Statue – Monument Avenue Richmond, VA
1943: 3,000 soldiers of the 7th Infantry Division land at Attu Island in Alaska’s Aleutian Islands to repel Japanese troops that landed in June of 1942. After a month of fighting under harsh arctic conditions, the Americans finish off the remaining Japanese in hand-to-hand combat after a last-ditch Bansai charge. The Battle of Attu is the only land combat on American soil during World War II.
1945: As U.S. soldiers launch another attack against Japanese forces on Okinawa’s Shuri Line, Japanese pilot Kiyoshi Ogawa’s specially modified Mitsubishi Zero fighter slips through anti-aircraft fire and drops a 550-lb. bomb on the USS Bunker Hill (CV-17) before slamming his aircraft into the flight deck, igniting a fuel fire and causing several explosions that kill some 400 sailors and takes Adm. Marc Mitscher’s flagship out of the war.

USS Bunker Hill
1957: President Dwight D. Eisenhower announces that the United States will work with South Vietnam to ensure the peaceful unification of Vietnam and continue to provide support in their fight against communism. At this point, the Military Assistance Advisory Group serving in Vietnam consists of only 700 men.
1961: (featured image) President John F. Kennedy approves the deployment of 400 Special Forces soldiers (Green Berets) and 100 CIA operatives to Vietnam to train South Vietnamese forces. The Green Berets have served as advisors in Vietnam since 1957, but on this day, Pres. Kennedy authorizes Americans to lead clandestine attacks against North Vietnam.