By the end of 1965 most American soldiers in Vietnam?

By the end of 1965, most American soldiers in Vietnam were primarily engaged in combat operations, as the U.S. military presence had escalated significantly to support the South Vietnamese government against the communist Viet Cong and North Vietnamese forces. The number of U.S. troops had increased to over 180,000, marking a shift from advisory roles to active combat involvement. This escalation set the stage for the intensification of the Vietnam War in subsequent years, leading to widespread protests and debates back home regarding U.S. involvement in the conflict.