Further educational assistance acts were passed for the benefit of veterans of the Korean War , the Vietnam Era , the introduction of an " all-volunteer force " in the 1970s ( following the end of conscription in the United States in 1973 ) , the Persian Gulf War , and those who served following the attacks of September 11 , 2001
attacks of September 11 , 2001
September 11 attacks
United States Department of Veterans Affairs