When you have a number of choices to select from, use a list or a chart. Draw a circle or a semi-circle with a radius of about 4 - 6. Mark the choices off as degrees on the circle. Hold the pendulum in the center and the swing of the pendulum will line-up with the appropriate marked off selection.
April 24, 1965 - President Johnson announces Americans in Vietnam are eligible for combat pay. May 3, 1965 - The first U.S. Army combat troops, 3500 men of the 173rd Airborne Brigade, arrive in Vietnam.
The U.S. also offers to train the fledgling South Vietnam Army. President Jonhson sent the first combat unit in 1965: The 9th MEB from Okinowa: March 8, 1965 - The first U.S. combat troops arrive in Vietnam as 3500 Marines land at China Beach to defend the American air base at Da Nang.