Mark Time. The command is Mark Time, MARCH. When marching, the command MARCH is given as either foot strikes the ground. The airman takes one more 24-inch step with the right (left) foot. He or she then brings the trailing foot to a position so both heels are on line. The cadence is continued by alternately raising and lowering each foot. The balls of the feet are raised 4 inches above the ground. Normal arm swing is maintained.
At a halt, on the command MARCH, the airman raises and lowers first the left foot and then the right. Mark time is executed in quick time only. The halt executed from mark time is similar to the halt from quick time.
To resume marching, the command Forward, MARCH is given as the heel of the left foot strikes the ground. The airman takes one more step in place and then steps off in a full 24-inch step with the left foot.
Information and Photos Courtesy of U.S. Air Force