Assests are as of yet undefined, and help would be great.

As long as the combined force of player characters makes sense to be together(nobody populates a whole division of sniper squads in a city) there is some leeway on what I have in mind. It'll be mostly infantry, which in itself is stocked with soldiers from the very start of this campaign to freshmeat that was shipped out a month ago to fill the quote on this attrition front. A random armor or survellance/espinioge unit has gotten stuck in the city while trying to pull back to intercept the pincer movement would also be good. 

There is a FTL system in place. ODST style deployment is resource expensive and rather inefficient unless used in a sort of stormtrooper anti-terrorist way. Orbital bombardments with kinetic rods is pretty common, but its more of a matter of how much do you want to blow up to then go plant your flag on, eh? Railguns, chembased lasers, are all pretty standard but the old school firearms are cheap, efficient, and usually the easiest option to equip units with.