The Allach subcamp was one of the largest satellite camps of Dachau concentration camp, located in Munich’s Allach-Untermenzing district. Up to 5,000 prisoners were forced to perform slave labor for BMW aircraft engine production. When units of the US 7th Army liberated the camp on 30 April 1945 — the same day as the main Dachau camp — several thousand inmates were still being held there, many of them Jewish. The 42nd Infantry Division (“Rainbow”), 45th Infantry Division (“Thunderbird”) and 20th Armored Division of the US 7th Army, officially recognized as “Liberating Units”, led the liberation of the Dachau complex. Footage shot by the US Army Signal Corps is among the earliest documentary records of Nazi crimes and was later used as evidence at the Nuremberg Trials.