| 1933: | Secretary of the Navy establishes Fleet Marine Force, integrating a ready-to-deploy Marine force with own aircraft into Fleet organization. |
| 1941: | US declares war on Japan. |
| 1941: | USS Wake (PR-3), a river gunboat moored at Shanghai, is only U.S. vessel to surrender during World War II. |
| 1942: | Eight PT boats (PT 36, PT 37, PT 40, PT 43, PT 44, PT 48, PT 59, and PT 109) turn back 8 Japanese destroyers attempting to reinforce Japanese forces on Guadalcanal. |