France. - The mechanic checks the plane. A pilot is standing nearby. On board the airplane there is an image of a crane and the inscription "Vieux Charles" ("Old Charlie"). The pilot is talking to the mechanic, standing at the airplane. Lieutenant Erto, who shot down 16 enemy airplanes, stands at the airplane. Adjutant Dormes, who shot down 6 enemy airplanes, sits in the cockpit of the airplane. Lieutenant Delling, who shot down 6 enemy airplanes, sits in the cockpit of the airplane. The mechanics and the pilot check the operation of the engine before the flight (on board the airplane there is a picture of a crane and the number "3"). A mechanic, sitting in an airplane, checks the sight of a machine gun by firing at a target installed directly in front of the airplane. The soldiers roll a searchlight mounted on wheels along the hillock and roll it out onto the road. A soldier starts a truck on the road. Installation of a searchlight with a winch on a truck. The officer is watching the position through binoculars. The soldiers remove the searchlight from the truck and roll it along the road, set it up on a hill, and check the readiness of the searchlight for work. A soldier turns on a power plant mounted on a truck. A working searchlight, an officer is standing nearby, a signalman is talking on a field phone. The officer is watching the position through binoculars, the soldiers are setting up a searchlight.