Original: She was commissioned in 1916 and served stateside during World War I. Arizona is best known for her cataclysmic and dramatic sinking, with the loss of 1,177 lives, during the Japanese attack on Pearl Harbor on 7 December 1941, the event that brought about US involvement in World War II.
Simplified: It fought in World War I. The USS Arizona is best known for its sinking during the Japanese attack on Pearl Harbor on December 7, 1941.