In Ankara... The Turkish government breaks off diplomatic and commercial relations with Germany.

On the Western Front... The US 3rd Army advances. The 8th Corps reaches Dinan and the outskirts of Rennes, in Brittany. To the left, elements of US 1st Army capture Villedieu in an attack around Tessy toward Mortain.

In the English Channel... During the night (August 2-3), off the coast of Courseulles-sur-Mer, 58 German Marder midget submarines attack allied shipping and sink the destroyer HMS Quorn as well as two other vessels. Only 17 of the German vessels survive the Allied counterattack.

In the Mariana Islands... On Guam, US forces make progress in attacks on the west side of the island but American attacks on the east side are repulse by the Japanese garrison.