Operation Barbarossa. German Panzers penetrate 40-50 miles into Soviet territory while Luftwaffe destroys another 1200 Soviet aircraft, mainly on the ground.
At 6.54 AM, U-144 sinks Soviet submarine M-78 in the Baltic Sea 9 miles West of Vindava, Latvia (all 15 crew lost including commander of the 4th Submarine-Division, Klt Matveev Stepan Ionovich). 3 other Soviet submarines (Ronis, Spidola and S-1) are scuttled at in the Latvian port of Libau to prevent capture by the Germans. 2 Soviet destroyers hit mines and sink (Gnevniy in the Baltic Sea off Estonian island of Hiiumaa, Bystry in the Black Sea off Sevastopol).