If the DC would have a Civil war then it would be betwen Cadmus and Justice League. Of course they would probably call them selfs secret Justice. Lex Luthor would probably be the head command of Cadmus and convincing the world he had become good. Wicht is bullcrap ofcours. It would probably start with that Captain Atom being put back in the airforce, like in the JLU series. This is my Idea of of the team line up and who would get kield by who

Cadmus
Captain Atom: Team leader
Captain Marvel
Firestorm
Atom Smasher (Kield by Cyborg)
Sandman
Hawk
Dove
Steel
Stargirl
S.T.R.I.P.E.
Kreeper
Mary Marvel
Commander Steel
Hourman
Ares(Kield by Hawkgirl
Power girl
Vixen (As a duble agent fore SJ)
Bizzaro(Who dose anything for Luthor)
Plastic Man
Superman Prime (Kield by Superboy)
Aztek
Pluse the Ultimen clone army

Secret Justice
Batman
Superman
Wonder Woman
Martin Manhunter(Kield by Power Girl)
Hawkgirl
Green Lantern
Flash
Beast Boy
Orion
Miss Martian
Superboy
Aquaman
Cyborg
Starfire
Nightwing(Kield by Steel)
Terra
Obsidian
Bumblebee
Moon Maiden
Hawkman
Rocket Red(Kield by Steel)
Booster Gold
Supergirl

It's sort of my own story I'm writing.

(Exuse My bad english)