Richard Nixon, arguably, tried to prolong the Vietnam War during the 1968 presidential campaign in an effort to win the presidency. Once he became president, he sought to establish enough stability in the region for the South Vietnamese government to take over. The result was an expanded U.S. military presence and increased military activity in neutral Cambodia. After hasty attempts of “Vietnamization”—the process of training and arming South Vietnamese troops for fighting alone after U.S. forces would pull out—all U.S. troops were evacuated by March 29, 1973.