not "every" big battle game / mmo has healers. wwii online doesn't, which is realistic. if this game is going to be truely realistic, (which it doesn't really look like it will be lol) then u wouldn't b able to jus run up to someone press a button and they get half their health bar back.
i personally hope that there will be medics in this game, but realisticly. i hope that they can't jus run around throwing ppls health up while they're shooting and getting shot and stuff thats just not fair and dumb. if someone is wounded pretty bad, then someone with medic skills should b able to sort of temporarily help them. in reality, all u can really do for someone, on the battlefield, is patch them up, stop the bleeding and try to clean the wound so that the wound doesn't worsen. i thnk that this would b a good idea, i like realistic games, and ive never really seen one thats like that lol so they prolly wont do it, but who knows.
another idea that would b more fair than healin someone while they're being shot at(basically making them invincible) is like the person being healed and the healer have to b completely still and not shooting or anything like that, and the medic could gradually heal the wounded mans wounds, and the health would come back slowly and maybe only to a certain point. this would b a lil more fair to gameplay but also keeping a little reality, well balanced.
whatever happens i hope there are some kind of field medics, i just hope its not like other mmorpgs where ppl can jus heal willy nilly while at the same time fighting someone, thats just retarted

