To play some games using Field of Battle 3 and doing it One-Hour-Wargames style, i.e. on a smaller table, I rearranged my Prussian unit organization (click picture to enlarge):
This small „army“ now consists of
- 2 Infantry Brigades, each of 3 battalions, one with an artillery battery (1 gun) attached and
- 1 Cavalry Brigade (2
squadrons)
The FoB 3 rules provide this force of nine units with around 9 Army Morale Points (AMP). Also, each Infantry and Cavalry unit has 4 Unit Integrity Points (UI) before it has to be removed (there is no individual figure removal). Each loss of one UI results in an equal loss of one AMP. And AMPs can not be regained.
Therefore, if the force loses 9 UI out of a total of 35 UI (Artillery units have 3 UI), equalling around 25%, it has to test for Army Morale if AMPs are down to zero and the Army Morale card comes up. Failure of this test means that your army retreats at once and you lose.
In my games, I increase the AMPs of both forces by around 33 to 50% to make them less brittle, so that these smaller games last a little longer.