the Empire. Subsequently, the Army began to provide uniforms, rifles and other equipment to the units. This Army support continued through World War I, with many school cadets making up the officers and non-commissioned officers of the First Expeditionary Force. In 1919 Compulsory Military Training was for all males from 14 – 21 years, thus Cadet units were structured into Cadet Battalions. Territorial regiments were raised and on completion of Secondary school schoolboys were posted to these Regiments. In 1932 CMT was abolished, but most Cadet Units continued at the schools on a voluntary basis, supported by teachers who had experienced World War I. During World War II the Army could not support the cadet movement but Officers ineligible for war service continued to manage the organisation. In 1929 the first open Sea Cadet Corps was formed in Christchurch, by the Canterbury Navy League. Units formed in the four main centres and were controlled nationally by the Canterbury branch of the League. The Navy League continued to manage these open community Sea Cadet units even when they came under the control of the Royal New Zealand Navy. 1941–1970 The Air Training Corps was formed in September 1941, Its purpose was to train potential airmen, providing basic knowledge and training as well as to provide an insight into Air Force work to prepare young men for the Air Force when they were old enough. In the 1950s specialist training appropriate to their parent service was introduced for the cadet forces. The rate of increase in the cadet movement from 1948 – 1960 eventually proved counter productive in the 1960s as the Army could not effectively support the numbers while meeting their own commitments. By 1964 the NZCF reached peak strength, mainly in school units of 198 units, with 1,000 officers and about 54,000 cadets. Reorganisation saw many schools cease cadet support and by 1965 there were about 20,000 cadets; further changes to support by the Army and the communities reduced school cadet numbers to 34 units and 10,300 cadets by 1970. Open community Sea Cadet Corps and Air Training Corps units had, meanwhile, slowly decreased to 55 units with 3,200 cadets. 1971–1984 Centralised supervision was established by the Chief of Defence Force of all three Corps and a Commandant appointed with Regular Force Defence personnel, under the control of the Commandant, provided at 5 locations around New Zealand to support units.