Discipline Test

Roll 2D6 and apply modifiers

Modifiers

General attached Grade +1
Elite +2
Veteran +1
Line (or recruit in column or square) 0
Recruit -1
Unformed -1
Flanked -1
Line to square when charged -1
Line to square when charged (large battalion) -2
4+ casualties -1
8+ casualties (large 10+) -2
Artillery 4+ casualties -1
Artillery 6+ casualties (large 8+) -2

Discipline test results 

7+ Unit obey orders and remains formed
4-6 Unit goes unformed. If a skirmish unit or an evading unit, retreat and lose 1D3 casualties.
3 or less Retreat and lose 1D3 casualties