Thanks for the replies guys. I figure that indeed most of the time with larger groups, it won't be a fight but a question of evasion. Still though, if the group is spotted first, I will need to play out some sort of pursuit or enemy action: even if its only until the players get far enough away. Treating subunits as squads and just playing the leader seems like a great idea.
I will check ruins of warsaw and see what they recommend.
My next question:
Do you play with a board & markers/minatures of some kind? If so what do you use for scale? All the maps included are usually sub 500m range, and recommend a scale of 1 grid being 10m. However, some encounters are 1-3km (possibly more with binoculars). That makes for a HUGE map anywhere near that scale. What do you use for
long range combat? I'm currently thinking about just using an intermediate scale map (like a 1:25000 topo) that lets the players hash out their scheme of maneuver and do any sniping / long range work, then bring out some 1CM=10M maps.
As a treat for you guys, I have been playing with photoshop cartography and here is my remake of "Chaos Deathspike Megakillers" from the rulebook, use as you will.
https://drive.google.com/file/d/0B8f...ew?usp=sharing