Lights underneath a stack

[W.Barksdale]

Does anyone know what the little lights underneath a stacks icon mean?

There are 8 little ones. Sometimes the lot of them are white. Other times there are green ones or even yellow ones.

Help is much appreciated!

[Benihana]

From What's not in the Manual:

What do those green, yellow, and red lights mean, at the base of each unit's icon?
The more of these lights are lit, the larger the size of the force. Green means that they're at full strength, or nearly so; while at the opposite extreme, red means that either the units are still being formed or they've taken significant damage. Furthermore, you can examine an enemy stack's supply status by using the "supply" map filter button and checking the lights: with the supply filter "on", red indicates that a unit has a serious supply problem; green means that they're fully supplied.

[Jim-NC]

The lights can be misleading. It tells the number of units in the stack. A division of 17 elements counts as 1 "unit", as does a militia of 1 element. So it reflects the number of units in the stack, not necessarily their real strength. When the supply filter is on, then it indicates relative supply level for the stack.

[W.Barksdale]

Thanks lads!