German soldiers inspect the downed SB-2M high-speed bomber.
In 1941, planes from SB series ( «high-speed bomber») has been deprecated and really were not speed, second speed in a modern fighter. However, SB bombers accounted for 90% of Soviet bombers and command was forced to actively apply them in the first period of the war. Security often flew without fighter escort, and under the complete domination of German aircraft in the air, the weakness of the defensive armament and protection SB bombers suffered heavy losses. Often sortie did not come back, no SB bomber. To the extent that the troops of modern bombers SB bombers were transferred to the service as a night bomber, and as such they provoevali until mid-1943.
Time taken: 1941