This Saturday is Bastille Day! In honor of the birth of modern France (my partner's homeland), I invite you kids to have fun storming the castle -- namely, the Keep on the Borderlands.
Below you'll find a link to my brief PDF notes for the Book of War scenario, Siege on the Borderlands, which features a massive monster horde attempting to escalade the Keep by surprise at the dark of night. This includes a complete roster for those forces found in the Keep, as well as a monstrous army (6 times larger than the nearby Caves of Chaos; and only by attacking at night does even this legion have a chance of quickly taking the Keep). You'll need some kind of model or scale map (1" = 20 ft) of the Keep to run it.
I ran this scenario several times last year with excellent results; it's really kind of fascinating to see players on both sides evaluate plans, take some initial losses, and revise strategies on the fly. Stay cool!