five of them run inside while three of the others take up guard positions to cover both direction of the tracks. A nod from the soldier with three stripes on his chest, a Sergeant, sends another running further down the tracks towards a bridge spanning a river. When he gets there he kneels just after the second main support column and as fast as he can he sets an explosive charge.
He quickly moulds the clay like material into the metal rafter before inserting the blasting cap and attaching a remote detonator. Then quickly runs to the opposite side and repeats the process before sprinting back down along the tracks to his team.
They cover his approach and he looks back to make sure the area is clear. As their comrade catches his breath the Sergeant asks a