The Rat Patrol (1966) : 1x24

Using a telephoto lens, Moffitt and Troy photograph a map inside Captain Dietrich's office from the roof of the adjoining Nazi HQ. It shows the location of a top secret German ammo dump. The Patrol must reach the site, enter it and destroy it before half of the German army arrives. The Patrol arrive to find the storage area--an old mine--surprisingly deserted. They go about planting the explosives but just before they blow it, Dietrich (who has laid this all out as a trap) turns up. Shots are exchanged and Dietrich and Troy are trapped inside. Meantime, outside the mine, assuming that in the cave-in Troy was killed, Moffitt and the Patrol prepare to finish blowing it up. Working together, Troy and Dietrich escape through a back entrance moments before the dump is blown up.