Continuity mistake: The windows in the sedan with the British spy go from clear to black from the time it stops in the junk yard until it is put in the crusher.
Visible crew/equipment: When the "blind" spy is talking with the British agent, the lighting rigs are reflected in his shades a few times.
Answer: It looks like an attack plan with the symbols representing buildings, trees and a church or graveyard in the village, the arrows representing troops and the Resistance, and the dotted line some kind of battle line.
Sierra1 ★