In the Solomon Islands… American forces land on several islands of the New Georgia group. Rendova island is targeted, in particular. All the landings are successful. There is heavy Japanese resistance on Vangunu. The American forces engaged for these landings are principally the 43rd Division (General Hester) with naval support by Task Force 31 (Admiral Turner) and land-based aircraft commanded by Admiral Fitch.

In New Guinea… A mixed Australian and American unit known as McKechnie Force lands at Nassau Bay near Salamaua from Morobe. There is heavy Japanese resistance to the landing.

On the Eastern Front… There a numerous small-scale engagements along the entire front.

In Occupied Poland… The commander of the Polish Home Army, Grot-Rowecki, is arrested by the Germans in Warsaw.