Today in U.S. Naval History - April 3
1797 - Capt. Thomas Truxtun issued first known American signal book using numerary system
1942 - Adm. Nimitz named Commander-in-Chief, Pacific Ocean Areas, a joint command, and retained his other title, Commander-in-Chief, Pacific Fleet
1992 - First five coed recruit companies graduate from Orlando, Fla. Naval Training Center.
For more information about naval history, visit the Naval History and Heritage Command website at history.navy.mil.