No.
You can not dual wield energy swords in halo 3 but there are rumors that you can in halo reach.
Soz bungie took out the dual-welding feature in reach for some reason.
There is NO duel-wielding weapons in Halo Reach. Double energy swords is impossible.
You don't. The only game to feature dual-wielding Energy Swords is Halo Wars, where the Arbiter Ripa'Moramee is shown to be a master dual wielding fighter and is a playable hero unit in skirmish and online modes.
There are no known energy swords in Halo 3: ODST.
sadly not yet
Finding them and wielding them
Because not everyone has Reach yet. And Halo 3 has dual wielding and other stuff Reach doesn't have
You can't hold two energy swords unless you use some kind of hack
You could not pick up Energy Swords in Halo: CE, so you can't in Anniversary's Campaign. In Anniversary Multiplayer, however, you can pick up the Energy Sword on maps that have it.
No, only with the help of a mod (modification).
Energy swords 10 uses/charge