The 400th Rifle Division was raised in 1941 as an infantry division of the Red Army, and served briefly during the Great Patriotic War in that role. The division followed a very similar combat path to that of the 398th Rifle Division through its existence. It was first formed in August in the Transcaucasus Military District. In January, 1942 it was moved to the Crimea where it joined the 47th Army in Crimean Front. On May 8, now in the 51st Army, it came under attack by the German 11th Army as part of Operation Trappenjagd and within weeks it was destroyed in the Kerch peninsula, being officially disbanded on June 14 after one of the briefest careers of any Soviet division. The 400th was never reformed.