mazeh joined the haganah in 1933. he volunteer in the british army during world war ii. he served in the convoy and after the formation of the jewish brigade he commanded the brigade's supply unit in europe. during the 1947–1949 palestine war he became the founder of the combat service support of the idf which he headed until may 1949. the division consisted of a number of sub-services: food services, fuel services, equipment services, transportation services, and service dogs and horses.