This is something bit more different, but its HL2RP.
Okay this is after the rebellion was triggered and the uprising starts.This RP is set in the Coast which would us this map
http://garrysmod.org/downloads/?a=view&id=52762 (http://garrysmod.org/downloads/?a=view&id=52762) (The 09)
The thing is this.You play one of the Rebels.If you haven't applied for a Resistance full flag.You only spawn with a crowbar and Pistol.But if you have the Resistance flag then you get the 2 and a smg.
And you can apply for overwatch or we can have NPC overwatch.
The game is around Territory capturing and holding.
I play a similar type in which we the rebels were to hold its grounds as the Combine attacked and after that we pushed forward.There were defenses and attacks.It was fun organizing your team and such.We can lose positions and try to strike and develop Sub factions, like alpha team or recon team.Medics and such.Its really really fun.
Its mostly around passive and gunfire combined.