by elas
Up to here you got it all right.Military bases can be used as usual and the new objective isn't destroyed after completion. You put the destroyed bases of the game there to see, how many you already destroyed this game.
I don't have the game in front of me, but I think this is all. The rest is for the story.
There is a conspiracy in the CDC. They call themselves Zodiac and the members are named after zodiac signs. They want to rule the world with their new military network, so this is why you destroy military bases.
Your killed character is a traitor and member of zodiac.