The German army invades France by marching into Malines, the last stop-over for Perla and Michel Lewkowitz and Valenciennes, where the family had lived.
The map shows the route of the German attack.
Perla and Michel were deported to Auschwitz on the same route, in the opposite direction.
Ironically, this map of the invasion reverses the routes of attack and escape. From Malines to Valenciennes, from Valenciennes via Malines to Auschwitz.
Having seen the map, you may wish to try the simple but meaningful quiz below.