During the Vietnam War, the U.S. military strategy was known as "Vietnamization." This approach aimed to shift the responsibility of fighting the war from American troops to the South Vietnamese forces while gradually withdrawing U.S. soldiers. It was part of a broader strategy to maintain U.S. interests in Southeast Asia without direct American combat involvement. The goal was to enable South Vietnam to become more self-sufficient and capable of defending itself against North Vietnamese forces. However, Vietnamization faced significant challenges and ultimately did not prevent the fall of Saigon, which marked the end of the war in 1975.