Each player controls at least one stack and uses them for movement on the map.
The stack is made up from an single
army-marker and at least two unit-markers.
The army-marker is just used as a lid for the stack, so the opposing players can not see the stacks content. You can replace the army-marker by a Warmaster stand (it looks so much better).
Unit-markers represent units (including war-machines, characters and so on) in a Warmaster army. All restrictions for ordinary 1000 points Warmaster armies apply. See recruitment.
When two stacks fight, the players replace the unit-markers by the represented Warmaster units and fight their battle.
After battle the markers of units lost (completely wiped out only) are removed from the stack.
I wanted to have an easy way to track what stack holds what units. As Warmaster has fixed unit costs a marker system is a quite natural choice. With Warhammer, the players would have to keep a list as there are endless possibilities for unit composition.