I thought something like, there are pre-determined systems and we have battles. If the Coalition wins, they force the Alliance back to the next system, and we have the fights there. Then, if the alliance wins say the next fight, they force the Coalition back to the starting system.
Eg.
Minor
Delta
Unknown 2
Gamma
Theta -- starting system Coalition Forces win, next battle VVVV. Alliance wins, Next battle ^^^^
Omega 41
Omega 5
Cambridge
New London
If Coalition win the battle at new London, Coalition forces win.
If Alliance wins a battle at Omicron Minor, Alliance forces win