text: Offense
  6-38. Movement formations allow the unit to move in a posture suited to the commander’s intent and
  mission. The commander considers the advantages and disadvantages of each formation to determine the
  appropriate formation for a situation. A series of movementformations may be appropriate during the course
  of an attack. All movement formations use one or more of the three movement techniques, which are
  traveling,traveling overwatch,and bounding overwatch.
  6-39. During operations, the commander designates a movement formation to establish a geographic
  relationship between units and to posture for an attack. The commander considers probable reactions on
  enemy contact, indicates the level of security desired, and establishes the preponderant orientation of
  subordinate weapon systems when directing formations. The commander provides flexibility to subordinate
  units to shift from one formation to another based on changes to METT-TC. (SeeFM 3-90-1 for additional
  information.)
  TROOP MOVEMENT
  6-40. Troop movement is the movement of Soldiers and units from one place to another by any available
  means (ADP 3-90). The BCT commander must be able to move forces to a position of advantage relative to
  the enemy. Troop movement places troops and equipment at the destination at the proper time, ready for
  combat. METT-TC dictates the level of security required and the resulting speed of movement. (See
  FM3-90-2 for additional information.) The three types of troop movement are administrative movement,
  tactical road march,and approach march.
  Administrative Movement
  6-41. Administrative movement is a movement in which troops and vehicles are arranged to expedite their
  movement and conserve time and energy when no enemyground interference is anticipated (ADP 3-90). The
  commander only conducts administrative movements in secure areas. Examples of administrative movements
  include rail and highway movement in the continental United States.Once units deploy into a theater of war,
  commanders normally do not employ administrative movements. Since these types of moves are nontactical,
  the echelon assistant chief of staff,logistics or brigade/battalion logistics staff officer(S-4)usuallysupervises
  the movement. (SeeFM 4-01for additional information.)
  Tactical Road Marches
  6-42. Atactical road marchis a rapid movement used to relocate units within an area of operations to prepare
  for combat operations (ADP 3-90). The unit maintains security against enemy air attack and prepares to take
  immediate action against an enemy ambush,although contact with the enemy ground forces is not expected.
  6-43. The march column is the organization for a tactical road march. All elements use the same route for a
  single movement under control of a single commander. The commander organizes a march column into four
  elements: reconnaissance,quartering party,main body,and trail party.
  Approach March
  6-44. Anapproach marchis the advance of a combat unit when direct contact with the enemy is intended
  (ADP 3-90). An approach march emphasizes speed over tactical deployment. Commanders employ an
  approach march when they know the enemy’s approximate location,since an approach march allows units
  to move with greater speed and less physical security or dispersion.
  6-45. Units conducting an approach march are task organized before the march begins (for example, in an
  assembly area) to allow transition to another movement technique without slowing the tempo. Units likely to
  occupy assembly areas are units preparing to conduct a tactical movement or to move forward to execute a
  forward passage of lines (additionally includes a unit establishing a tactical reserve,completing a rearward
  passage of lines,and conducting reconstitution). The approach march terminates at a march objective,such
  as an attack position,assembly area,or assault position,or an approach march and can be used to transition
  to an attack. Follow and assume and reserve forces may conduct an approach march forward of a line of
  departure.