If you were logged in you would gain 3 XP for posting a reply.
You are replying to:
You have access to all multiplayer units. Some units you see in campaign are limited to campaign only to prevent unbalancing of the game, otherwise, terran would be severely overpowered.
You have access to all multiplayer units. Some units you see in campaign are limited to campaign only to prevent unbalancing of the game, otherwise, terran would be severely overpowered.