Frederick William I reduced the size of Frederick I's gaudy royal guard to a single regiment, a troop of taller-than-average soldiers known as the Potsdam Giants or more commonly the "Lange Kerls" (long fellows), which he privately funded. The cavalry was reorganized into 55 squadrons of 150 horses; the infantry was turned into 50 battalions (25 regiments); and the artillery consisted of two battalions. These changes allowed him to increase the army from 39,000 to 45,000 troops; by the end of Frederick William I's reign, the army had doubled in size. The General War Commissary, responsible for the army and revenue, was removed from interference by the estates and placed strictly under the control of officials appointed by the king.