FM 17-35 ( Armored Cavalry Platoon, Troop and Squadron ) 1960

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When the armored cavalry squadron is assigned the mission of
protecting a flank of the division, and separate routes are not
available until after the penetration is made, it is desirable that
the leading battle group or battalion on that flank be followed by
an armored cavalry troop. This troop moves with the main body
until it is necessary to occupy blocking positions beyond the initial
penetration, at which time it leaves the column and moves directly
to the blocking position. Other elements of the squadron are
spaced throughout the column as may be required to permit occupation
of subsequent blocking positions. After blocking positions
have been occupied by elements of the squadron, subsequent movement
usually is conducted by bounds.
e. Reconnaissance helicopters and observation aircraft will normally
be placed in support of the squadron. Transport helicopters,
when available, are used to airlift ground elements to critical
locations where detailed reconnaissance, observation, or defensive
action is required.
284. Flank Guard, Planning and Conduct
a. Planning. For a flank guard mission the squadron commander
makes plans to move the squadron in column formation on
the flank of the main body and to seize and occupy blocking positions
as necessary. Planning provides for locating the command
post centrally in the column, and for combat trains to accompany
the command post. It is usually desirable to leave the, squadron
field trains with the trains of a nearby combat command or battle
group in the main body to ensure their protection. When the
main body is halted or in a defensive posture, the flank guard corresponds
to a general outpost. If available, Army aircraft should
be placed in support of each troop and assigned missions that extend
the reconnaissance capability of the squadron to the flank
and front. An artillery liaison officer and possibly a forward air
controller should be available to accompany the squadron commander
and assist in planning for supporting fires.
b. Conduct. The squadron commander ensures continuous reconnaissance
by air and ground means, and keeps the main body
commander informed of enemy activity on the flank. He employs
the troops in a manner corresponding to that described in paragraphs
171 through 174. If a threat develops on the flank in a
moving situation, the squadron commander protects the main
body by occupying blocking positions. He resists enemy action by
offensive, defensive, or delaying action, or a combination thereof,
and in so doing, provides time for the main body to react to the
enemy threat. If a covering force is operating on that flank, he
establishes and maintains contact with it.
186 AGO 4088B