text: Movement and Forms of Maneuver
  Figure 2-11. Traveling overwatch movement technique
  BOUNDING OVERWATCH
  2-20. Bounding overwatch is a movement technique used when contact with enemy forces is expected.
  The unit moves by bounds. One element always halts in position to overwatch another element while it
  moves. The overwatching element positions to support the moving unit by fire or maneuver. Units use the
  bounding overwatch movement technique when expecting to make contact with enemy forces. There are two
  variations of this technique: alternating bounds and successive bounds.
  2-21. In both cases, the overwatching elements cover the bounding elements from covered or concealed
  positions with good observation and fields of fire against possible enemy positions. The support by fire
  positions also offer protection for stationary weapons platforms. They can immediately support the bounding
  elements with fires or maneuver against the enemy if the bounding elements make contact. Unless they make
  contact en-route, the bounding elements move via covered and concealed routes into the next set of support
  by fire positions. Leaders base the length of a bound on the terrain and the range of overwatching weapons.
  They can use the uncommitted part of their forces whenever needed as part of an immediate and controlled
  reaction to any threat to the bounding force.
  2-22. If the unit uses alternate bounds, the bounding element moves forward, halts, and occupies a support
  by fire position. The stationary element always covers the bounding element’s movement, halt, and
  occupation of the bounding element’s support by fire position. The bounding element advances past the
  stationary element, takes an overwatch position, and becomes the new forward element. The former
  stationary element now becomes the bounding element, advances past the stationary element, and occupies
  a new support by fire position. This method is usually more rapid than successive bounds. Figure 2-12 on
  page 2-12 illustrates a bounding overwatch using alternating bounds.
  2-23. As depicted in figure 2-13 on page 2-12, if the unit uses successive bounds, the lead element, covered
  by the trail element, advances and occupies a support by fire position. The rear element advances to a support
  by fire position abreast of the lead element and halts. The lead element moves to the next position and the
  move continues. Only one element moves at a time, and the rear element avoids advancing beyond the lead
  element.