During World War II, Soviet armies included the all-arms (общевойсковые), tank (танковые), air (воздушные), and air-defence (противо-воздушной обороны (ПВО)) armies which included a number of corps, divisions, brigades, regiments and battalions belonging largely to the appropriate branch of the armed forces or of the arm of service, such as the rifle corps. In the emergency of June 1941 it was found that inexperienced commanders had difficulty controlling armies with more than two or three subordinate corps, so several armies were disbanded, to be reformed later in the war. Thus Soviet High Command's (Stavka's) Circular 01, of July 15, 1941, directed several changes to Red Army force structure, including the elimination of rifle corps headquarters and subordination of rifle divisions directly to rifle army headquarters. Following the Second World War, an army was reorganised with four or five divisions, often equivalent to a corps in the militaries of other countries. During a war, an Army of the Soviet military was typically subordinated to a front. In peacetime, an army was usually subordinated to a military district.