9 March: 1230 Bulgarian tsar Ivan Asen II defeats Theodore of Epirus in the Battle of Klokotnitsa. 1811 Paraguayan forces defeat Manuel Belgrano at the Battle of TacuarÃ. 1847 Mexican-American War: The first large-scale amphibious assault in U.S. history is launched in the Siege of Veracruz. 1862 American Civil War: The USS Monitor and CSS Virginia fight to a draw in the Battle of Hampton Roads, the first battle between two ironclad warships. 1896 Prime Minister Francesco Crispi resigns following the Italian defeat at the Battle of Adowa. 1916 Pancho Villa leads nearly 500 Mexican raiders in an attack against Columbus, New Mexico. 1925 Pink's War: The first Royal Air Force operation conducted independently of the British Army or Royal Navy begins. 1944 World War II: Japanese troops counter-attack American forces on Hill 700 in Bougainville in a battle that would last five days. 1944 The Soviet Air Forces conduct heavy bombing on Tallinn, Estonia, killing up to 800 people, mostly civilians 1945 The Bombing of Tokyo by the United States Army Air Forces begins, one of the most destructive bombing raids in history. 1956 Soviet military suppresses mass demonstrations in the Georgian SSR, reacting to Nikita Khrushchev's de-Stalinization policy. 1961 Soviet satellite Sputnik 9 successfully launches. 1990 Dr. Antonia Novello is sworn in as Surgeon General of the United States, becoming the first female and Hispanic American to serve in that position. 2011 Space Shuttle Discovery makes its final landing after 39 flights.