- Take an active 1-element state Militia unit and have n available Militia units recruitable in that state.
- Recruit one such unit in the same region as the existing Militia unit. Note that number of recruitable units is now n-1.
- Select both units and combine into a 2-element unit.
- Note that the number of recruitable units is now back to n.
- Recruit another such unit and wait until it is trained/active, then lather, rinse, repeat for an unlimited number of Militia units (until some event fires a ChangeUnitPool -n on that state's militia pool).