One of Bayou Land’s most influential bridges
During the beginning of the campaign a nearby Gray weapon plant was taken over by the Tan. A Gray Colonel made a promise to the Green command that he will give them the last Key in exchange for their help.
But the Colonel was trapped in his Mansion, in the middle of a swamp area, and needed the help of Sarge to get him safely out of the area. The Tan even moved three tanks into the area to keep him in his Mansion.
Once the Colonel was safe, about to enter in the Half-Track that will extract him, he gave Sarge the third Key and information about its power. But the Colonel could get to the safe house because the road was blocked for vehicles. So Sarge and The Colonel proceed on foot, fighting his way across the Bridge leading to the location.
The Grey Colonel told to the Green Army the secret of the Keys. When put together, form a triangular device. The Keys open a Portal of unknown powers. The Portal is near a Cemetery at the end of a south road of a town.