On 19 October 1939, Witt was appointed to command a battalion in the SS-Standarte Deutschland, with which he participated in the Battle of the Netherlands and the Battle of France.
On 19 October 1939, Witt was tasked with leading I. "Bataillon" (1st Battalion) of the SS- "Standarte" "Deutschland". In this command position Witt participated in the Battle of the Netherlands and Battle of France.