A One-Round Living Greyhawk Gran March Regional Adventure
From the introduction:
Each year, young men and women from across Gran March mark their 15th birthdays and await the arrival of Mustering Day with a mixture of anticipation and dread. Everyone, from the poorest commoner to the richest nobleman, understands the necessity of serving Commandant and Country. The idea that an entire village would refuse to send its children to the Army is simply unthinkable. And yet, that is exactly the situation that you are being asked to investigate.
A Gran March regional adventure for [character levels] 2 - 8, and Part One of the War of the Undying series.