Updated: Feb 18, 2019
So, your party is getting up there in levels. They are making a stronghold. You want them to have to defend it!
Break out the Chainmail! Oh but wait. You're new to AD&D? Chainmail's rule booklet is a confusing mess? Omitting some of the optional rules (and all rules related to gunpowder...which is a crying shame because the mechanics for firing cannons is exceedingly cool) I've condensed the rules down to one poster-size collection of charts.
Feast your eyes:
This system doesn't account for the full variety of AD&D weapons and armor. It makes generalizations about how well geared your troops are while still allowing for significant choices.
While some knowledge of wargames and/or Chainmail will help you in utilizing this poster, I've tried to make it as straightforward as possible.
Note that sending a high level PC out onto the battlefield makes abstraction of the character sheet, HPs, AC etc. but does allow for special ability and spell use.
Here is a Troop Tracker you can use during play:
Now go and lay waste!