text: Security Operations
  conducts course of action analysis to determine whether the task assigned to the lead element exceeds the
  capabilities of the unit. The lead element does not reconnoiter the battle positions or occupy them unless
  required when contact is made; follow-on elements reconnoiter their assigned battle positions before occupation.
  Note. If available, air Cavalry forces are well suited to maintain contact with the main body and
  to perform reconnaissance forward of the security force lead troop if available. However, there is
  inherent risk involved when ground forces rely on aviation assets to maintain communications
  with the main body on their behalf.
  5-78. The remainder of the security force maneuvers along the route of advance and occupies battle positions
  as necessary. Criteria for the route are the same as in a moving flank screen. Troop or company-sized battle
  positions are designated parallel to the axis of the main body, outside the route of advance, and along avenues
  of approach into the security force. Follow-on elements reconnoiter assigned battle positions before
  occupation. Scouts occupy observations posts along a screen line forward of the battle positions.
  5-79. Since the squadron is moving in one direction and orienting in another, the security force commander
  plans control measures that facilitate this dual orientation. The commander may assign an objective for
  orientation or to secure the flank of the main body objective. One set of control measures control the security
  effort, and another set of control measures control movement in parallel to the protected force (see figure 5-4).
  Figure 5-4. Moving flank guard mission