Any tips on crossing open/clear terrain

[Mowgli]

Do you mind if I ask another question?

On my Grenada campaign, the second mission I think it is, there is a bridge with has some barbed wire infront of it. 

During the game I get a bulldozer reinforcement. I assume this is to clear the obstruction, the wire? But I cannot figure out how! I've looked in the manual and don't see the bulldozer!

You need to fire the bulldozer's weapon ("cat blade") at the wire-hex. It has a range of 1 and is an "in-line" weapon, so you can only target the front hex of the bulldozer with it (depending on the bulldozer's facing).