UK 3 The Gauntlet is "capture the castle, then defend the castle"
Thanks - I have that, as well as UK 2. That might be just what I'm looking for!

UK 3 The Gauntlet is "capture the castle, then defend the castle"
B10 Night's Dark Terror begins with a seige on a manor house. The adventure includes a huge map and sheets of counters, as this was pre-mini era. The adventure is still the finest that has been released (IMO of course).
Oh my, thanks for mentioning this! I've just looked it up and realized I've actually DMed that one back in the days.UK 3 The Gauntlet is "capture the castle, then defend the castle"
I turned around "Return to the Keep on the Borderlands", eventually having the organized folks in the Caves of Chaos counterattack those darn raiding adventurers in the Keep.
It worked great -- the highpoint of my DMing career.
How you deal with NPC's on the PC's side is important in this sort of scenario. I just fought the whole thing out, round by round -- all 150+ rounds of it, with multiple same-round fights in multiple locations. My group loved it, others may not . . .
Players knowing about stuff their characters couldn't see wasn't a problem at all, BTW.
I'm not sure how it would work in 4e (since I haven't done a 4e campaign). As I vaguely understand it, I guess these folks would be 1 hp minions, where hit = dead.