1922 - Report on observations of experiments with short wave radio at Anacostia, DC, starts Navy development of radar
1941 - Launch of first Liberty ship, SS Patrick Henry, in Baltimore, MD
1942 - Armed Guard on SS Stephen Hopkins engages German auxiliary cruiser Stier and supply ship Tannenfels. Stephen Hopkins and Stier both sink.
1944 - Special Air Task Force (STAG-1) commences operations with drones, controlled by TBM aircraft, against Japanese in Southwestern Pacific
1950 - First Marine Division captures Seoul, South Korea
(Source: Navy News Service)