Block 1 : retractable turret for twined 75mm guns

Block 2 : turret for two twined machine-guns

Block 3 : observation post

Block 4 : casemate for three 75mm guns

Block 5 : turret for twined 81mm mortars

Block 6 : turret for two machine-guns

Block 7 : casemate for 47mm AT gun and machine-guns

E.M. : ammunition entrance

E.H. : personal entrance

Usine : power station

Caserne : barracks (bedrooms, kitchens)