In Italy… The Canadian 1st Corps captures Frosinone; the British 10th Corps takes Sora. Around Anzio, forces of the US 6th Corps capture Velletri and Monte Artemiso while other elements attack Albano. The German loss of Velletri unhinges their defenses of the Caesar Line.

In New Guinea… US forces reduce their perimeter near Arare. All the American beachheads on the north coast experience significant Japanese attacks. Meanwhile, to the east, Australian forces capture Bunabum.

In the Bismark Sea… The destroyer USS England sinks the Japanese submarine RO105, northwest of the island of New Ireland. This is the sixth successful attack on a submarine by this vessel in twelve days.