Fortified Sector of the Sarre
Encyclopedia
The Fortified Sector of the Sarre (Secteur Fortifié de la Sarre) was the French military organization that in 1940 controlled the section of the Maginot Line
Maginot Line
The Maginot Line , named after the French Minister of War André Maginot, was a line of concrete fortifications, tank obstacles, artillery casemates, machine gun posts, and other defences, which France constructed along its borders with Germany and Italy, in light of its experience in World War I,...

 on either side of the Sarre river. The sector's defenses relied primarily on a system of inundations that could be created by fortified dikes and regulating weirs, backed by blockhouses. Weakly defended compared with other sections of the Maginot Line, the sector received a measure of attention and funding from the mid-1930s when the formerly demilitarized Saarland
Saarland
Saarland is one of the sixteen states of Germany. The capital is Saarbrücken. It has an area of 2570 km² and 1,045,000 inhabitants. In both area and population, it is the smallest state in Germany other than the city-states...

 was reintegrated into Germany. However, with a single petit ouvrage it remained a weak point in the Line. In 1940 the Sarre sector was attacked by German forces in the Battle of France
Battle of France
In the Second World War, the Battle of France was the German invasion of France and the Low Countries, beginning on 10 May 1940, which ended the Phoney War. The battle consisted of two main operations. In the first, Fall Gelb , German armoured units pushed through the Ardennes, to cut off and...

. The inundations were only partly successful, and German forces were able to pierce the Maginot Line at the Sarre, allowing German divisions to move behind the main French line.

Concept and organization

Compared with much of the French border with Germany and Luxembourg, the valley of the Sarre was not heavily fortified. As long as the Saarland
Saarland
Saarland is one of the sixteen states of Germany. The capital is Saarbrücken. It has an area of 2570 km² and 1,045,000 inhabitants. In both area and population, it is the smallest state in Germany other than the city-states...

 was demilitarized, the sector did not face a significant military threat. With the union of the Saarland with Germany in 1935, the area posed a greater threat. The shallow water tables in the area prevented deeply-buried fortifications of the Maginot type in most of the sector, but presented opportunities for the defensive use of inundations. A system of reservoirs feeding diked impoundments gave France the ability to rapidly flood the valleys of the Nied and Moderbach rivers. The necessary dams, weirs and dikes were defended by blockhouses, and were themselves strongly built.
Work had already taken place to inundate the Sarre, Albe and Modebach. Work on inundations of the Nied started in 1934. Construction of casemates to cover the flooded areas started in 1935. Three ouvrages armed with 75mm gun turrets were proposed: Remmerberg, Vahl-Ebersing and Valette, but funding difficulties prevented their construction. Only the petit ouvrage Haut-Poirier was built. The western part of the sector did not use inundations, relying on blockhouses along the Nied.

The weakness of the western portion of the sector was cause for concern during the Phoney War of 1939-40, resulting in the construction of the CEZF Line (Commission d'Étude des Zones Fortifiées), or Second Position, to the rear of the four western sub-sectors. A number of blockhouses were built under the auspices of the Service Technique du Génie (STG), but the line was incomplete in 1940, with long gaps between blockhouses.

The Région Fortifiée de la Sarre ("Fortified Region of the Sarre") was briefly created, encompassing the SF Sarre and the neighboring Fortified Sector of Rohrbach
Fortified Sector of Rohrbach
The Fortified Sector of Rohrbach was the French military organization that in 1940 controlled the section of the Maginot Line in the vicinity of Bitche. The sector was bordered to the west by the Fortified Sector of the Sarre and to the east by the Fortified Sector of the Vosges...

. The region existed for two months, in September and October of 1939. Several transfers took place of sub-sectors to and from the neighboring SF Rohrbach and SF Faulquemont. In particular, Ouvrage Haut-Poirier was attached to Rohrbach at the time of its construction. Until 15 March 1940 the sector was called the Secteur Défensif de la Sarre.

Command

The Sarre sector was under the overall command of the French 4th Army
Fourth Army (France)
The Fourth Army was a Field army of the French Army, which fought during World War I and World War II.-World War I:*General Fernand de Langle de Cary *General Henri Gouraud...

, headquartered at Vic-sur-Seille
Vic-sur-Seille
Vic-sur-Seille is a commune in the Moselle department in Lorraine in north-eastern France.-See also:*Communes of the Moselle department*Parc naturel régional de Lorraine...

, under the command of General Réquin, which was in turn part of Army Group 2 under General André-Gaston Prételat
André-Gaston Prételat
André-Gaston Prételat was a general in the French Army.-1910-1918:His first post, from 1910 to 1912, was as military attaché to Tangier...

. The SF Sarre was commanded by General Boucher until 2 January 1940, then Colonel Dagnan. The command post was at Hellimer
Hellimer
Hellimer is a commune in the Moselle department in Lorraine in north-eastern France....

. The interval troops, the army formations that were to provide the mobile defense for the sector, to support and be supported by the fixed defenses, were under the command of the 20th Corps (20e Corps d'Armee), General Hubert, commander. The 20th Corps was in turn made up of the 11th and 52nd Infantry Divisions, as well as the 82nd African Infantry Division Artillery support for the sector was provided by the 66th Position Artillery Regiment (Régiment d'Artillerie de Position (RAP)), which controlled both fixed and mobile artillery, commanded by Lieutenant Colonel Robert. The 11th ID and the 82nd DIA were made up of active-service troops, while the 52nd ID was a Class B reserve formation, not suitable for heavy or sustained combat.

At the mid-point of the Battle of France on 1 June 1940, the fortress troops of the SF Sarre amounted to two fortress infantry regiments in six battalions and two fortress machine gun infantry regiments in six battalions, comprising 600 officers and 17,000 men. After 13 June, many retreating units were organized into mobile units to try to establish stop lines. In the Sarre sector, retreating units were organized into the Dagnan group, under the 20th Army Corps' command.

Description

The sector includes, in order from west to east, the following major fortified positions, together with the most significant casemates and infantry shelters in each sub-sector:

Sub-sector of Lixing

69th Fortress Machine-gun Infantry Regiment (69e Régiment des Mitrailleurs d'Infanterie de Forteresse (RMIF)), Lt. Colonel Jobin, command post at the Bois de Brill

The sector included ten blockhouses, designated by number, and two artillery casemates, Noonenwald (AC7B) and Biding Nord (AC 3B), which provided flanking fire along the blockhouse line with 75mm guns. The sub-sector 's positions were located on the south bank of the Nied.

Peacetime barracks and support:
  • Casernement de Lixing

Sub-sector of Altrippe or Leyviller

82nd Fortress Infantry Regiment (82e Régiment d'Infanterie de Forteresse (RIF)), Lt. Colonel Matheu, command post to the south of the Vieux-Bois at Leyviller

The sector comprised six blockhouses on the south bank of the Nied, with two flanking casemates mounting 75mm guns. The casemates were Biding Sud (AC 5B) and La Costaude (AC 1B).

Peacetime barracks and support:
  • Casernement de Leyviller
  • Casernement de Barst

Sub-sector of Saint-Jean-les-Rohrbach

174th Fortress Machine-gun Infantry Regiment (174e Régiment des Mitrailleurs d'Infanterie de Forteresse (RMIF)), Lt. Colonel Duparant, command post at the Corne du Plaffenbusch

The sector comprised ten blockhouses, mostly on the south side of the Moderbach, all built by the STG. The sector also included four fortified dikes intended to control inundations along the Moderbach:
  • Réservoir de Hoste-Haut (R8 B)
  • Réservoir de Hoste-Bas (R6 B)
  • Digue de Loupershouse (R4 B)
  • Digue de Puttelange (R12 B)


Water features included:
  • Réservoir de Hoste-Haut, area 23 hectares (56.8 acre), 579,000 m3
  • Réservoir de Hoste-Bas, area 14 hectares (34.6 acre), 156,400 m3
  • Réservoir de Diffembach, area 46 hectares (113.7 acre), 2,150,000 m3
  • Bief de Loupershouse, 260,000 m3
  • Bief de Puttelange, 1,200,000 m3


Peacetime barracks and support:
  • Casernement de Saint-Jean-des-Rohrbach

Sub-sector of Kappelkinger

41st Colonial Machine-gun Infantry Regiment (41e Régiment des Mitrailleurs d'Infanterie du Casemate (RMIC)), Lt. Colonel Tristani

The sector lacked blockhouses or casemates entirely, consisting of two advanced posts, Grundviller and Hill 242.

Water features included:
  • Réservoir de Rémering, area 56 hectares (138.4 acre), 960,000 m3
  • Réservoir d'Hirbach, 1,221,830 m3
  • Bief de Rémering, 390,000 m3
  • Bief de Richeling, 260,000 m3
  • Bief d'Holving, 850,000 m3


Peacetime barracks and support:
  • Casernement de Puttelange

Sub-sector of Sarralbe

51st Colonial Machine-gun Infantry Regiment (51e Régiment des Mitrailleurs d'Infanterie du Casemate (RMIC)), Lt. Colonel Revier de Mauny, command post at Keskastel

Like the Kappelkinger sub-sector, the Sarralbe sub-sector had only two advanced posts: Willerwald and Kisswald.

Peacetime barracks and support:
  • Casernement de Sarralbe

Sub-sector of Kalhausen

133rd Fortress Infantry Regiment (133e Régiment d'Infanterie de Forteresse (RIF)), Colonel Bertrand, command post at Kalhausen
  • Ouvrage Haut-Poirier
    Ouvrage Haut-Poirier
    Ouvrage Haut-Poirier is a lesser work of the Maginot Line. The ouvrage consists of one entry and three infantry blocks, and is located between the Saare valley and petit ouvrage Welschhof, facing Germany. It is the only ouvrage in the Fortified Sector of the Sarre, the remainder of the area being...

    , petit ouvrage O220 of three combat blocks and one entry block


Second position - CEZF Line

A fallback line behind the main line, roughly following the south bank of the Albe river. Twenty-two STG-style casemates were proposed, of which thirteen were constructed.

Battle of France

The SF Sarre first saw action on 15 May, 1940, when German forces launched a brief offensive in the area, intended as a feint to draw French forces from other sectors, in particular from the area of Sedan, where the main German attack was to fall. Named Operation Fackel ("Torch"), the German operation used three divisions, the 60th, 75th
75th Infantry Division (Germany)
The 75th Infantry Division was a German division in World War II. It was formed on 26 August 1939.-75. Infanterie-Division 1939:*Infanterie-Regiment 172*Infanterie-Regiment 202*Infanterie-Regiment 222...

, and the 258th infantry divisions under the XII armeekorps. The operation was a success, surprising the French 11th Infantry and the 82nd Algerian Infantry divisions after a short but heavy artillery barrage. Initial German objectives were taken, but forces rallied and fought on for as many as three days. The French 2ndArmy Group withdrew to the vicinity of the Maginot Line and deferred transfers of forces to other sectors, achieving the effect desired by the Germans of preventing reinforcement at Sedan.

The assault in earnest on the SF Sarre, Operation Tiger, opened on 14 June with an artillery bombardment that had little effect on French defenses. Nevertheless, the German offensive arrayed the German First Army (AOK 1), which deployed the XII (XII AK, 75th and 268th IDs), XXIV (XXIV AK, 60th and 252nd IDs) and XXX (XXX AK, 79th
79th Infantry Division (Germany)
The 79th Infantry Division was an infantry division of the German Wehrmacht during World War II.- Creation and Early History :...

, 93rd and 258th IDs) Corps, backed by a reserve composed of the 168th, 197th, 198th and 257th IDs against the French 20th Corps. The 20th Corps was composed of five regiments of fortress infantry supported by the 52nd ID and the 1st Polish Grenadiers. German air support was provided by V Fliegerkorps. The principal attack started at 0730, with XII AK and XXX AK moving against the west side of the Sarre valley, XXIV moving to the east in support. The German attack focused on the Valette village. The attack met with mixed success, taking casualties from unsuppressed French artillery, but capturing several French blockhouses. The 93rd ID's attack stalled, however, taking fire from the main line of fortifications, forcing a withdrawal. An attempted crossing of the Nied by the 258th ID failed as well. Fire from a French 75mm casemate destroyed German artillery and bridging equipment. The 268th ID's attack initially stalled, but broke through French lines at Hoste. The 75th ID's attack across the Moderbach also produced success after an initial setback. XXIV AK's attack on the east side of the sector failed entirely and was the object of a successful French counterattack.

Faced with the progressive collapse of the French First Army to the west, the French command in mid-June ordered the withdrawal of field army units and interval troops from the Maginot Line, to be carried out from 13 June. Operation Tiger therefore unfolded at the time of the planned withdrawal. With high casualties and less than overwhelming success, the commanding German Colonel General von Witzleben
Erwin von Witzleben
Job-Wilhelm Georg Erdmann Erwin von Witzleben was a German army officer and in the Second World War an Army commander and a conspirator in the July 20 Plot.-Early years:...

 considered calling off the offensive, but a captured copy of French withdrawal plans caused him to continue the attack. That night French units moved south past the CEZF Line. The next day German forces pushed aside the French rear-guard and fought the French 52nd ID and the Polish Grenadiers, who stopped the German advance for the day and withdrew the night of the 15th. Serious French resistance to the German breakthrough ended, leaving German forces free to move along the Maginot Line's rear.

The 262nd ID approached Haut-Poirier from the rear on 21 June. The Germans opened fire with 155mm artillery at 1500 hours, concentrating on Block 3. Without artillery support from a gros ouvrage, and with Blocks 1 and 2 were unable to intervene, their fire blocked by terrain, Haut-Poirier surrendered at 2200 hours. The casemates nearby surrendered at the same time..

After the June 1940 armistice the Germans stripped Haut-Poirier of all equipment. The ouvrage was in poor condition after the war and was not chosen for renovation.

Units

The 41st Colonial Machine Gun Infantry Regiment defended the Moderbach and Albe valleys in the Kappelkinger sub-sector. In June 1940 the retreating 41st RMIC was attached to the Dagnan group of mobile forces and tretreated into the Vosges
Vosges mountains
For the department of France of the same name, see Vosges.The Vosges are a range of low mountains in eastern France, near its border with Germany. They extend along the west side of the Rhine valley in a northnortheast direction, mainly from Belfort to Saverne...

, fighting at Mittersheim
Mittersheim
Mittersheim is a commune in the Moselle department in Lorraine in north-eastern France.-See also:*Communes of the Moselle department*Parc naturel régional de Lorraine...

, Avricourt
Avricourt
Avricourt is the name of the following communes in France:* Avricourt, Meurthe-et-Moselle, in the Meurthe-et-Moselle department* Avricourt, Moselle, in the Moselle department* Avricourt, Oise, in the Oise department...

 and finally Nompatelize
Nompatelize
Nompatelize is a commune in the Vosges department in Lorraine in northeastern France.Inhabitants from well established local families are known as hauts-banais or hautes-banaises according to gender. This is a reference to the hilly territory in which the village is located and which at one time...

, where the unit surrendered to German forces on 22 June.

The 51st Colonial Machine Gun Infantry Regiment was positioned in the Sarralbe sub-sector. It joined the Dagnan group on 14 June, retreating through Harskirchen
Harskirchen
Harskirchen is a commune in the Bas-Rhin department in Alsace in north-eastern France.-Location:Harskirchen lies in the French Saar region, in the extreme northwest of Alsace...

 to the Marne-Rhine Canal
Marne-Rhine Canal
The Marne-Rhine Canal is a canal in north eastern France. It connects the river Marne in Vitry-le-François with the Rhine in Strasbourg. Combined with the canalised part of the Marne, it allows transport between Paris and eastern France. The original objective of the canal was to connect Paris...

, then to Montreux
Montreux, Meurthe-et-Moselle
Montreux is a commune in the Meurthe-et-Moselle department in north-eastern France.-See also:*Communes of the Meurthe-et-Moselle department...

, Neufmaisons and La Salle, surrendering near Rambervillers
Rambervillers
Rambervillers is a commune in the Vosges department in Lorraine in northeastern France.Inhabitants are called Rambuvetais.-Geography:The town is built on the banks of the Mortagne, some to the west of Saint-Dié and to the north-east of Épinal....

 on 23 June.

The 69th Fortress Machine Gun Infantry Regiment occupied the Lixing sub-sector, which was transferred to the SF Faulquemont on 15 March 1940. During Operation Tiger, the regiment faced the German 258th Infantry Division. In retreat, the unit was attached to the Girval group as it made its way to the Marne-Rhine Canal from 14 June. The regiment was captured 19-20 June in the area of Lunéville.

The 82nd Fortress Machine Gun Infantry Regiment was located in the Leyviller sub-sector. On 15 March 1940 the sub-sector fell under the control of the SF Faulquemont. Following the 2 June attack, the regiment retreated as part of the Girval group of mobile units, retreating in good order, but was taken prisoner between 19 and 21 June near Bruyères
Bruyères
Bruyères is a commune in the Vosges department in Lorraine in northeastern France.The town built up around a castle built on a hill in the locality in the 6th century. It was the birthplace of Jean Lurçat, in 1892.-History:...

 and the Col du Haut-Jacques.

The 133rd Fortress Infantry Regiment was stationed in the Kalhausen sub-sector, which was thransferred from the SF Rohrbach to the SF Sarre on 15 March 1940. The regiment 's second battalion provided the garrison for Ouvrage Haut-Poirier. Units of the regiment that could disengage retreated towards Sarre-Union
Sarre-Union
Sarre-Union is a commune in the Bas-Rhin department in Alsace in north-eastern France.It consists of two older towns that were unified on 16 June 1794. On the east bank of the Sarre river is the town of Bouquenom and on the west bank the town of Ville Neuve de Sarrewerden .-References:*...

 and Fénétrange
Fénétrange
Fénétrange is a commune in the Moselle department in Lorraine in north-eastern France.-External links:* IGN website* INSEE website* Quid website* *...

, regrouping on the Marne-Rhine Canal. Driven off the canal line, retreat continued to Raon-l'Etape
Raon-l'Étape
Raon-l'Étape is a commune in the Vosges department in Lorraine in northeastern France.Inhabitants are called Raonnais.-Geography:Raon-l'Étape is positioned at the mouth of the Plaine River at the point where it converges into the Meurthe, itself a tributary of the Moselle...

, where the unit surrendered on 21 June. The untis left at Haut-Poirier surrendered the same day.

The 174th Fortress Machine Gun Infantry Regiment watched the Saint-Jean-Rohrbach sub-sector. Unusually for a fortress unit, the regiment took part in a brief offensive on the Wandt from 10 to 23 September 1939, part of the Marion group of forces. The 174th's sub-sector was attacked by the German 52nd Infantry Division on 5 June, and was the object of a major thrust of Operation Tiger on 14 June. In retreat, the regiment was assigned to the Dagnan group, retreating to Salles
Salles
Salles is the name of several communes in France:* Salles, Gironde, in the Gironde department* Salles, Lot-et-Garonne, in the Lot-et-Garonne department* Salles, Hautes-Pyrénées, in the Hautes-Pyrénées department...

.

Present status

Haut-Poirier is on private property and is sealed to access. The Casemate de Wittring is maintained as a museum and may be visited. At Barst
Barst
Barst is a commune in the Moselle department in Lorraine in north-eastern France.The village is situated on the N56 road.commune in the Moselle department in Lorraine in north-eastern France....

, two STG casemates have been restored as part of a display on the frontier defenses.

External links

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