This simultaneously increased the French defensive power , as Vauban immediately set about expanding the conquered cities into strong fortifications .
From a purely military perspective , France had gained some advantages , by breaking through the ring of fortresses that surrounded the Spanish Netherlands .
This increased the France defensive power , as Vauban immediately set about expanding the conquered cities into strong fortifications .
From a purely military perspective , France had gained some advantages , by breaking through the ring of fortresses that surrounded the Spanish Netherlands .