Inspired by real-life AVLBs (armored vehicle-launched bridges), brickmaster Mahj set about creating the Stilzkin EXT3 Bridge Launcher. The result is impressive. The music? Gravy.
The whole process takes a purported "less than a minute," and during that time the vehicle can deploy the bridge, detach from it, cross the chasm, and reattach. The video even has a gag reel of sorts at the end. War is hell, even for Lego. [YouTube via Brothers Brick]