text: Troop Movement
  Infiltration March
  14-29. Units dispatch vehicles in small groups, or at irregular intervals, at a rate that keeps the traffic density
  down and prevents undue massing of vehicles during a move by infiltration. Infiltration provides the best
  passive defense against enemy observation and attack. It is suited for tactical movements when there is
  enough time and road space and a commander desires the maximum security, military deception, and
  dispersion. The disadvantages of an infiltration are that more time is required to complete the move, column
  control is challenging, and it protracts the recovery of broken-down vehicles by the trail party when compared
  to vehicle recovery in close and open columns. Additionally, units cannot restore their unit integrity until the
  last vehicle arrives at the destination, complicating the unit’s onward deployment.
  Note. Infiltration as a tactical march technique during troop movement differs from Chapter 2’s
  discussion of infiltration as a form of maneuver.
  14-30. Units emphasize security during halts. Soldiers tend to let their guard down and relax their vigilance
  during halts. Units address this by defining unit actions in SOPs for various types of halts, such as
  maintenance or security halts.
  GRAPHIC CONTROL MEASURES
  14-31. Units executing tactical and nontactical movements often use strip maps or overlays to depict critical
  information graphically about the route to subordinates. The overlay or strip map shows the route, SPs, RPs,
  checkpoints, critical points (such as bridges), light lines, and traffic control posts (TCPs). Figure 14-3 depicts
  some of these route control measures. A light line is a designated line forward of which vehicles are
  required to use blackout lights during periods of limited visibility. (Figure 14-4 on page 14-8 shows a
  sample strip map.) Other graphic control measures include assembly areas and phase lines.
  Figure 14-3. Example overlay with route control measures