With the outbreak of World War II on September 1, 1939, the area was a scene of the Battle of Bzura and some fighting occurred in Głowno vicinity. The town was overrun by the German Wehrmacht during the second week of September. Nazi German administration was established and Głowno became part of German administrative unit known as General Government. During the occupation numerous acts of Polish resistance, Armia Krajowa etc., occurred in Głowno including the clandestine execution of a Roman Catholic priest who worked as an informant for the Nazi police. Nazi reprisals took the lives of many citizens, including those murdered in mass executions at the town's cemetery and inside the town's German police headquarters and also in the Nazi occupied Warsaw's infamous prison Pawiak. Many citizens were forced into slave labor for the Germans and some were shipped to various factories and farms across Germany.