Isaak Korshak was born in Pereyaslav, Ukraine (USSR), 1912 to Shmilyk and Rakhila. He was an officer. Prior to WWII he lived in Pereyaslav, Ukraine (USSR). During the war he was in the Soviet armed forces. Isaak was killed in military service in WWII. Place of death: unknown, 1941.
Large numbers of Jewish soldiers serving in the Allied military forces, many of them in the Soviet army, were killed in combat or died of battle wounds.