The 160th Fortress Infantry Regiment held the Narbéfontaine sub-sector and its three petit ouvrages.

The 87th Fortress Infantry Regiment manned the Hainaut sub-sector.

The 54th Fortress Infantry Regiment spent much of 1939 and 1940 completing and extending the fortifications in the sector.

Fortress troops were provided by the 12th and 171st Fortress Infantry Regiments.

The garrison was part of the 5th company of the 23rd Fortress Infantry Regiment.

The 156th Fortress Infantry Regiment was in charge of the Zimming sub-sector.

The 136th Fortress Infantry Regiment covered the Mouzon sub-sector.

The 147th Fortress Infantry Regiment was stationed on the Sedan sub-sector.

The 28th Fortress Infantry Regiment was positioned in the Dessenheim sub-sector.

The fortifications were manned by the 10th Fortress Infantry Regiment.