A ETW guide - by dear old Claus von Clausewitz

[Susanna]

6. From all this it follows that we should use such obstacles on one flank to put up a relatively strong resistance with few troops, while executing our planned offensive on the other flank. It is very advantageous to combine the use of entrenchments with such natural obstacles, because then, if the enemy should pass the obstacle, the fire from these entrenchments will protect our weak troops against too great superiority and sudden rout.

That actually works quite well! The trick is to have a weak side/flank with units spread that use some sort of cover (stone walls/buildings/trenches) to hold of the enemy, while the stronger side beats their opponents with superior numbers and the beginns to roll up the front along the side.

Susanna/Calapine

I wouldn't worry about it, Claus von Clausewitz has a special ring to it too.