The Night of the Long Knives, also called the Röhm purge or Operation Hummingbird, was a purge that took place in Nazi Germany from 30 June to 2 July 1934. Chancellor Adolf Hitler, urged on by Hermann
Kurt Daluege, chief of the Ordnungspolizei; Heinrich Himmler, head of the SS; and Ernst Röhm, head of the SA, August 1933
Franz von Papen, the conservative vice-chancellor who ran afoul of Hitler after denouncing the regime's failure to rein in the SA in his Marburg speech. The photo was taken in 1946 at the Nuremberg trials.