The U.S. Postal Service celebrates the USS Missouri (BB-63) with a Forever stamp. The famed American battleship is being honored to coincide with the 75th anniversary of her commissioning on June 11, 1944. The battleship was affectionately nicknamed “Mighty Mo,” and had one of the most historic roles during World War II. On Sept. 2, 1945, military officials from the Allied powers and imperial Japan convened on her deck and signed the documents confirming Japan’s surrender and ending the war.