Final answer:
By the end of 1967, there were approximately 485,600 combat troops stationed in Vietnam.
Step-by-step explanation:
By the end of 1967, there were approximately 485,600 combat troops stationed in Vietnam. This number represents the peak of American military involvement in the Vietnam War. The U.S. troop levels continued to fluctuate throughout the war, but by the end of 1967, it had reached close to half a million.
Learn more about American combat troops in Vietnam