SDU (Skirm Development Unit) taking a new squad out (Patreon)

Skirmish development units are specialized units selected from high performing combat units with over 1 full terms service. They specifically take units out to perform combat readiness drills with a view to seeking & engaging enemy units to "break" in either new units or units who have not yet had a heavy skirmish encounter. 

The idea is to expose them to combat to keep the rigor within the ranks.