http://playingattheworld.blogspot.no/20 ... nmail.html

Jon Peterson talks about an AC-like system for Chainmail, even using the term Armor Class, that appeared in an issue of International Wargamer. OTOH, the system starts at 1 and goes up to 8, sort of reversed from the AC system in OD&D.

From what I have heard from elsewhere, Dave Arneson was the one who introduced the descending AC system used in OD&D, which he borrowed from a naval game? It is sort of ironic if the whole AC thing came full circle with 3rd Edition....

-Havard

I was just rereading old dragon magazines and, in issue #1, Len Lokofka had what appears to be a variant of Chainmail. In it, he produced a version of the alternate combat system that used Chainmail 1-8 armor class numbers. I thought that was pretty odd. His rules also had variable spell effects and separated a monster to-hit chances from it's hit dice.

I'm surprised this article doesn't receive much attention these days.

It would if it was renamed "Armour Class in Chainmail Bikinis".