I haven't played any 6mm games yet but when I do it will be using the V3 Flames of War rule set. I have an army planed out as fellow blogger and good friend Warren ''find his blog here'' have a game planed for when we both finish our armies. We are both going to use lists out of the Bridge at Remagen book and being 6mm size terrain and armies we will be using 2500pts lists.
Here is some pics of some of the figures so far.
From left to right the scales are - 6mm (1/300), 15mm (1/100), 28mm (1/56)
6mm - Heroics and Ros.
15mm - Battle Front.
28mm - Warlord games/Italeri and Rubicon.