Hi,
Rules of Engagement are from Great Escape Games. They are sold by Warlord Games since they took over Bolt Action Miniatures who were in partnership with G.E.G.
http://www.greatescapegames.co.uk/index.php
I have the rules and have played a few games with them. I think that they are a good set of rules for platoon level skirmish games with perhaps a vehicle in support.
I especially like the way that orders are given at the beginning of a turn.
Although the rules are written with 28mm minis in mind, I am actually using them with Valiant 1/72 figures with no problems, in fact it seems to me that the weapon ranges work better at this scale.
Hope this helps.