A unit may adopt a skirmishing formation during the battle assuming it is free to move normally. Simply move the models apart to form a rough clump or line with each model moving up to its usual skirmish move distance.

Skirmishing troops can readopt a conventional formation if the unit includes a musician. The drummer or horn player sounds the call to reform and the unit regroups into ranks and files about the musician model. See the Movement section for the Reforming rule.