Bloc 1, or B 1 was one of the fort's two combat bunkers. Bloc 1 and 2 were basically identical.
It was equipped with a collapsible 75 mm cannon, type F.R.C., and 2 machine gun turrets.
The type F.R.C. indicates that it is a rapid-fire cannon from the Fonderie Royale des Canons of Belgium.
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