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.
1 March 8, 1965 - The first official US combat troops arrive in Vietnam. 2  The US begins a bombing campaign of Northern Vietnam called Operation Rolling Thunder. 3  January 30, 1968 - North Vietnam launches the Tet Offensive attacking around 100 cities in Southern Vietnam.