at 65 (though later you'll have to skill up) you can Campaign Battle, the few who do CB's without a raise would appreciate getting a raise, especially since for those without a way to RR are screwed unless anyone with raise is around that will actually raise. Exp is crazy easy to get there now even Ops too (CB ops not Dom) with Medal of Altana its 9000 exp a go (well at 75 I think)

CB is the way to go, just have to skill up later since you can't skill up with tags.