During World War II, the "Notrim" became part of the Jewish Brigade, where it grew and became more known among the Palestinian Jewish public. Many new recruits joined the organization, where they went through a filtering process where it was decided what unit they were to be placed in. In 1944, an order was given by the Haganah to create its own military police in the Jewish Brigade, and the task was given to a captain therein, named Daniel Lifshitz (later Danny Magen). Lifshitz and three sergeants from the brigade who served at a base near Cairo, Egypt were the initial nucleus of the organization, and recruited soldiers mainly from within the brigade itself.