In November 1943, the German 117th Jäger Division began a mission named Unternehmen Kalavryta (Operation Kalavryta), intending to encircle Greek guerrilla fighters in the mountainous area surrounding Kalavryta. During the operations, some German soldiers were killed and 77 of them, who were taken prisoners, were executed by the Greek guerrillas. On 10 December 1943 von Le Suire signed the order for the German division to "level the locations Mazeika and Kalavryta".