On the Eastern Front... The siege of Sevastopol ends with massive Soviet losses. The Germans take 90,000 prisoners. The Germans have a total of 24,000 casualties.

In the Arctic... PQ-17, British convoy bound to Murmansk is fired upon by German forces. Admiral Pound, First Sea Lord of the British Navy orders the convoy to scatter and the close escorts to retire. He believes that the convoy can no longer be protected by the Home Fleet, as it is now within range of the German Luftwaffe and the German heavy ships are on their way to attack. The order is controversial and the commanders of the escort ships protest, but eventually obey the order. 

Over Holland... The first strikes by American Army Air Force planes over Europe take place, when six American planes join a RAF squadron attacking airfields in Holland.