Prior to its independence in October 1953, Laos lacked almost completely a professional military school system – Officer, Non-commissioned officer (NCO) and Staff schools, plus Technical and Branch training schools – for its Armed Forces, and relied heavily on foreign assistance to train its personnel. Beginning in the early 1950s, Laotian Officers and selected enlisted men were sent overseas to attend specialized courses and advanced schools, and this practice would continue throughout the 1960s and early 1970s. However, a small indigenous training infrastructure (initially run exclusively by the French) gradually began to take shape during the last years of the First Indochina War, and as the Laotian Civil War progressed, it was expanded with the help of the American aid programs, with most of the training being carried out by U.S. advisors.