A long time ago, one of the members of an earlier T2k forum ran the following page (now only available on the Internet Wayback Machine) devoted to WW2
http://web.archive.org/web/200907292...00ww2main.html
He used Version 2.2 and never got to finish the site but it has a healthy number of military vehicles and a small arms page (though only with German and US weapons done)
However, the guy who did the page was also a firefighter and produced some rules for calculating fire (like how fast it will burn and so on) that are well worth keeping
http://web.archive.org/web/200907292...alculator.html