Havn't heard of RC combat, and you call yourself a pilot.. HA HA just kidding.. RC combat is real fun... And distructive for that matter. which is part of the fun, well sometimes...
All the rules could be found on the rc combat assn site,
www.rccombat.com Basic idea is try to cut the other guys streamer off thier tail while trying to keep your streamer from being cut. Doing that with 5 or more people is hard. Combat is flown in rounds each being 5 minutes long. You can get extra points by flying the whole fiive minutes, extra points by keeping all of your streamer etc.
There is different classes also so you could be flying together with like planes. The 4 main classes is open A - .15 size motors; open B - .25-.30 size motors, SSC (slow survivable combat) - limit on motor cost, RPM and a Scale class. Just a primer, on the RCCA website it will list all the rules and regulations.
I mainly fly Open A with my Lanier Ripper which could be seen here....