TACTICAL PROBLEMS. 
525 
The rear-guard, formed by the 2nd and 3rd battalions of “ B ” Regi¬ 
ment, the 3rd Battery, the Engineer Section, and quarter of a troop, 
will hold the enemy, occupying successively the crests near Clermont 
and Montigny, and eventually the heights on the banks of the Serre. 
The reconnaissance squadron, after leaving a detachment to watch 
the enemy^s right flank, will make for the bridge of Agnicourt, which 
is to be barricaded and, if necessary, destroyed. One troop will be 
sent to Yigneux to block the bridge on the Montcornet-Yervin road. 
The outpost half squadron will place itself without delay on the 
west flank to guard and defend the bridge of Bosmont, which may be 
destroyed. The rear-guard must endeavour to maintain its position 
on the plateau, north of Montigny until the last fractions of the main 
body are one kilometre clear of the foot of the heights on the right 
bank of the Serre. 
