USS St. Louis (CL49) off Agana, 19/20 July 1944. National Archives 80.G.255 328 (MARC).

In Hagåtña, on the night of 20 July, 11 CHamoru men, women, and children were accused of signaling US aircraft and bayoneted to death by Japanese soldiers. Two teenagers escaped by faking death after being stabbed by bayonets.