Can some one explain the smoke munitions in FotB clearly? I think it says that you the range against vehicles but how dice do get? Also can any squad of vehicle use munitions?

RAF1945 said:

Munitions tokens that can only be assigned to specific vehicles (including pieces of equipment). Not squads.

Smoke is not normal ordnance. Instead, the attacking player targets a hex and not a unit. The round creates smoke in the target hex. When attacking with a smoke round, the attacking player uses the same number of dice as if attacking a vehicle regardless of what might be in the hex itself. If at least two hits are
rolled, place a smoke token in the targeted hex. If only one hit is scored, roll a red and a black die to determine drift. The colored dice indicate how many hexes away the smoke round drifts and in what direction it drifts. If no hits are rolled, then a misfire has occurred; discard the smoke munitions token with no effect.

Important Note: the colored (red and black) dice for drift in FotB are different from that in the base game. To be consistent with the base game, the black die should be used used for distance and the red die for direction. But hey, that's me. I think it would be good to keep it consistent.