text: Security Operations
  Table 13-2. Screen movement methods (continued)
  Method Characteristics Advantages Disadvantages
  • Main body is moving • Observation posts • Least secure
  relatively quickly. displace quickly. method.
  • Performed as a route • Maintains unit integrity.
  Continuous reconnaissance.
  marching • Enemy contact is not likely.
  • Unit should maintain an air
  screen on the flank.
  13-70. Units consider the mission variables when deciding which movement method to employ. Figures
  13-7 below and 13-8 on page 13-18 illustrate four methods of controlling movement along a screen line.
  These methods are—
  * Alternate bounds by individual observation posts from the rear to the front. (Company-sized and
  smaller units usually employ this method.)
  * Alternate bounds by subordinate units from the rear to the front.
  * Successive bounds by units along the screen line.
  * Continuous marching along the route of advance.
  Figure 13-7. Examples of alternate bound by OP and alternate bound by unit