Occupying the lines of operation of the enemy enables you to transform a marginal
victory into a substantial victory, a substantial victory into a decisive victory and a
decisive victory into an overwhelming victory, providing you have protected your own
lines of operation.
Effects on moral:
0 lops -50% morale drop, 1 lop -10%, ... 3 controlled lops +30%, 4 controlled lops +100%
The differential is determined by how demoralised your troops are at the time.
ie if your guard regiment is at 100% and you loose 1 lop it will drop to 90%, if attacked by unit of same value it will only have a morale of 10% higher, assuming you cannot have higher than 100%. Depending on other factors the loss of 1 lop will not be that great...
Loss of French lop, the surrendering units rallied near the lop for some reason and lop changed hands, nothing broken imo.
Prisoners do need an escort, 1000's of surrendered enemy troops moving to the rear will need some escort?