Security: 
   Those measures taken to protect a command from enemy observation,
annoyance and surprise. 
   Obtained by covering the front with detachments. 
   March.—­Advance, flank and rear guards. 
   Camp.—­Outposts. 
   March and camp detachments.—­To give warning and resist attack until
such time as detachment in rear can deploy.

Advance Guard: 
   Detachment from main body to cover its advance. 
   Against surprise for information. 
   Push back small bodies. 
   Check enemy’s advance until deployment in rear. 
   Seize good position and locate enemy lines. 
   Remove obstacles. 
   Strength 1-20 to 1-3 of entire command.

Divisions of Advance Guard: 
   Cavalry point. 
   Infantry point. 
   Advance party. 
   Support. 
   Reserve.

Leading Troops: 
   A detachment protecting the head of a column in retreat.

Rear Guard: 
   Detachments protecting the rear of a retreating column. 
   Formation like that of advance guard.

Flank Patrols: 
   Detachments for protecting the flanks of marching column.

March Outpost: 
   Detachments for protection of column halted on march. 
   Formation, that of the marching protection.

Outpost: 
   The detachments forming the protection for a force in camp or
bivouac.

Divisions of Outpost: 
   Reserve. 
   Line of supports. 
   Line of outguards. 
   Pickets.

Sentinel Posts: 
   Sentry squads.  Cossack posts.  Sentinels. 
   Detached posts (from support).

Hours of Special Danger: 
   Evening and dawn; thus good times to relieve outposts.

Examining Post: 
   Intelligence and a place where prisoners, etc., are brought in.

Orders: 
   The expression of the will of a commander, either written or verbal. 
   Letters of instruction—­plans of the superior leaders.

Field Orders: 
   Regulate tactical and strategical actions of troops.

General Orders Include: 
   (1) All necessary detailed instructions.
   (2) All standing instructions (avoid repetition).
   (3) Proceedings of general and special courts-martial.

Special Orders: 
   Relate to assignment and movement of individuals, not necessary to
be communicated to the whole command.

      Bearers of verbal orders must repeat.

Field Orders: 
   (1) Heading.—­Title, place, date, hour and number.
   (2) Distribution of troops.—­Division of command.
   (3) Body: 
      (a) Information of enemy and supporting troops.
      (b) General plan of commander.
      (c) Detailed tactical dispositions to carry out general plan.
      (d) Instructions for trains—­also the positions of ammunition
          and dressing stations.
   (4) Ending.—­Authentication and method of sending.