valley was commanded by Lt. Colonel Bonnet of the 45th DBCA, with a command post at Guillestre, and a forward command post at Villargaudin. Sub-sector Guil 45th Alpine Cavalry Demi-Brigade (45e Demi-Brigade des Chasseurs Alpins (DBCA)), Lt. Colonel Martin, command post at the Villargaudin. Quartier Péas No fixed positions, 107th Alpine Cavalry Battalion (107e Bataillon des Chasseurs Alpins (BCA)), command post at Fort Queyras. Quartier Queyras No fixed positions, 87th Alpine Cavalry Battalion (87e Bataillon des Chasseurs Alpins (BCA)) and elements of the 92nd BAF, command post at La Motte Tremblante. Pont-du-Roi, anti-tank barricade Quartier Sommet-Bucher Five small avants postes, manned by the 1st and 3rd companies of the 92nd BAF and a company of the 87th BCA., command post at Sommet-Bucher. Quartier Ceillac 102nd Alpine Fortress Battalion (102e Bataillon Alpin de Forterresse (BAF)), command post at the Col de Bramousse. A number of concrete emplacements were built by the MOM in the quarter. Vallée de l'Ubaye district Colonel Dessaux, command post at either Jausiers or Batterie XII at Tournoux. Sub-sector /Ubaye-Ubayette 83rd Alpine Fortress Battalion (83e Bataillon Alpin de Forterresse (BAF)), command post at the Fort Moyen at Tournoux. Quartier Saint-Paul Command post at Grande=Serrenne Ouvrage Plate Lombard (PL), petit ouvrage of four blocks (MOM) Quartier Meyronnes Ouvrage Saint Ours Haut (SOH), petit ouvrage of five blocks (CORF) Ouvrage Nord-Est de Saint-Ours (NESO), petit ouvrage of two blocks (CORF) Ouvrage Nord-Ouest de Fontvive (NOF), petit ouvrage of two blocks (CORF) Ouvrage Saint Ours Bas (SOB), petit ouvrage, single block (CORF) Ouvrage Roche-la-Croix (RLC), gros ouvrage of five blocks built into a pre-1914 fort (CORF) Ouvrage Ancien Camp (AC), petit ouvrage or abri passif of two blocks (MOM) Fort de Tournoux, an elaborate series of pre-1914 fortifications Batterie XII at valley level with four casemates Fort Grouchy at an intermediate level Fort Supérieure on the heights Batterie du Claus des Caures Batterie du Vallon Claous Fortin de Serre de Laut, anti-aircraft battery Fort de Viraysse, pre-1914 at Avant-post de Larche (L), of six blocks (MOM) Batterie du Roche-la-Croix Supérieure, pre-1914 artillery battery Observatoire de la Duyère, series of observation points Observatoire des Challances, observation point Observatoire de Serre-la-Plate (SLP), two-block observation post (MOM) Abri Nord-Est de Saint-Ours (NESO) Barrage du Cimitière de Larche Blockhaus du Colombier MOM Rocher Sub-sector Jausiers 157th Alpine Fortress Demi-Brigade (157e Demi-Brigade Alpin de Forteresse (DBAF)) and 73rd BAF Quartier Sagnes First company of the 73rd