Military would be awesome fun to be apart of and also take down.
Yes them being over powered is one thing to consider.
But. If the cops are having too much of a hard time trying to control the cities or towns, or have a huuuuge team of players robbing the bank, call in the army as defence.
The army could drive around with their HMG Hunters and Striders, with a truck or two, carrying heaps of valuable stuff. And not to mention, maybe army vehicles can be stolen and kept by anyone except cops and stored in their garage. If that's possible to add in with the scripts.
Military can have access to the most powerful weapons on arma, excluding vehicles.. GMG's would be too crazy. And a blackfoot etc would be way too over powered for Altis Life. So we could limit them to a pawnee with some rockets and the LMG on the sides. And maybe have a blackhawk with two guns mounted on the sides.
They'll also have access to all the military uniforms, like Ghillie suits etc.
You could make them KOS, because the rebels will see them as a threat and also want their vehicles etc. But the military won't be allowed to attack unless being attacked.
Also, the military will be allowed to enter the rebels area. Just to clear out the area and have a bit of fun. All while their vehicles can be stolen and kept.
Might also make a black market trading for military vehicles/weapons.
Make a sub-forum for the Altis Life Black Market, and have just the traders post their goods to sell, and then have it in secret where to meet up. This will also make it fun for the police to raid and track down illigal black market trades. (Trades cannot be made in the rebel area (Red Zone))
This will also make a trust game fun, and have snipers etc looking on the location of the illigal trade, because nothing say's you can't make an unfair trade. If you're more powerful and quick enough to get a gun out to kill the seller, the item is yours.
Having military bases on the map would be fun to raid too, maybe make it like the bank, but when you break in and get the goods, it could be like thermal scopes, good weapons and ammo or stuff that normal civ's/rebels cannot get access to. Not gold, or drugs or anything that can be sold to NPC's, but something that can be used and traded to players. Maybe have a Strider HMG locked away as a reward or something. A reward such as fire power will make people go rob it.
Not to mention, maybe make it that you cannot rob the military unless their are 6+ army officers online. Same rule as the bank and 6+ cops.
Also, the military will have their own medics as a slot to join in with. And the rest will be a normal slot.
Anyway, got a bit too carried away, but that's my thoughts