Fort de Sucy

About

Fort de Sucy was built following the Franco-Prussian War to defend Paris. Located to the southeast of Paris in Sucy-en-Brie, the fort was part of an outer ring of eighteen major fortifications built in response to improvements in the range and effectiveness of artillery since the construction of the Thiers fortifications of the 1840s. It was built in accordance with improved principles of fortification developed for the Séré de Rivières system.

The Fort de Sucy was built between 1879 and 1881 on a location that had been used by the Prussians to bombard the Saint-Maur peninsula in the 1870 war. The site controlled movement on the Route nationale 4 (Paris-Strasbourg) and Route nationale 19 (Paris-Mulhouse). The site also overlooked the Bois Notre-Dame and the Armainvillers Forest. With the advent of improved explosive shells, the fort was modernized with concrete cover almost immediately after it was completed.