Three chief petty officers instructing enlisted students in a submarine school classroom, Groton, Connecticut, circa 1943. Note diagram of "fleet"-type submarine on the blackboard and the "Be Reliable" sign above (80-G-K-16120).
Featured below are a series of watershed events drawn from the U.S. Navy's long, colorful history. The lessons learned from these are the basis for many of today's operating principles and continue to inform the service's professional standards and core values. The listing is by no means exhaustive and will be expanded periodically.