In 1925, Hitler ordered the formation of a new bodyguard unit, the Schutzkommando ("Protection Command; SS").[11] It was formed by Julius Schreck and included old Stoßtrupp members such as Emil Maurice and Heiden.[12][13] That same year, the Schutzkommando was expanded and renamed the Sturmstaffel ("Storm Squadron"), and finally the Schutzstaffel ("Protection Squadron"; SS).[14] Heiden, described by William Shirer as "a former police stool-pigeon of unsavory reputation",[15] joined the SS in 1925 and was an early advocate of separating the unit from the SA, its parent organization.[16]