German invasion of Luxembourg

For the German invasion of Luxembourg in World War I, see German occupation of Luxembourg during World War I.
German invasion of Luxembourg
Part of the Battle of France (World War II)

German troops crossing into Luxembourg
Date10 May 1940

Decisive German victory


France France

Air support:
 United Kingdom


Commanders and leaders
Luxembourg Charlotte of Luxembourg
Luxembourg Pierre Dupong
Luxembourg Émile Speller (POW)
France Robert Petiet
United Kingdom Arthur Barratt
Nazi Germany Heinz Guderian
425 soldiers
246 gendarmes
18,000 troops
United Kingdom:
No. 226 Squadron RAF
~50,000 soldiers
600 tanks
Casualties and losses
1 soldier wounded
22 soldiers captured
6 gendarmes wounded
54 gendarmes captured
5 Spahis killed
United Kingdom:
1 pilot killed
2 pilots captured
1 aircraft destroyed

The German invasion of Luxembourg was part of Case Yellow (German: Fall Gelb), the German invasion of the Low Countries (Belgium, Luxembourg and the Netherlands) and France during World War II. The battle began on 10 May 1940 and lasted just one day. Facing only light resistance, Luxembourg was quickly occupied. The Luxembourgish government, and Grand Duchess Charlotte, managed to escape the country and a government-in-exile was created in London.


The outbreak of World War II on 1 September 1939 put Luxembourg’s government in a delicate situation. On the one hand, the population’s sympathy lay with Britain and France; on the other hand, due to the country's policy of neutrality since 1867's Treaty of London, the government adopted a careful non-belligerent stance towards its neighbours. As per the treaty's restrictions, the only military force Luxembourg maintained was its small Volunteer Corps under Captain Aloyse Jacoby, reinforced by the Grand Ducal Gendarmerie under Captain Maurice Stein. Together they formed the Corps des Gendarmes et Volontaires under Major-Commandant Émile Speller.[Note 1]

As of 1 September, Radio Luxembourg stopped broadcasting.[2] Two weeks later the volunteer corps was bolstered by the addition of a 125-strong auxiliary unit.[3] In the spring of 1940, fortifications were erected along the borders with Germany and France. The so-called Schuster Line, named after its constructor, consisted of concrete roadblocks and bridge blocks with steel doors. A series of nine radio outposts were established along the German border, each manned by gendarmes, with a receiver in Captain Stein's office by the volunteers' Saint-Esprit barracks in the capital.[4][5] The official aim of these obstacles was to slow down the progress of any invading army and give time for the guarantors of Luxembourg's neutrality to take counteractions against the invaders. However, compared to the massive power of the German forces, it only had symbolic character and helped to calm down the population.

After several false alarms in the spring of 1940, the probability of a military conflict between Germany and France grew. Germany stopped the export of coke for the Luxembourgish steel industry. Abwehr agents under Oskar Reile infiltrated the country, posing as tourists.[6]

This was observed by Captain Fernand Archen, an undercover senior French intelligence officer Luxembourg City, posing as a wine merchant. He reported his findings to his superiors at Longwy on 7 May, understanding that the agents were to be used to seize key bridges over the Sauer, Moselle and Our rivers.[7] Luxembourg authorities also took notice, and Captain Stein worked to stop the Germans' activities.[5]

On 3 March, the French Third Army was given in orders to occupy Luxembourg in the event of a German attack.[8]


On the afternoon of 9 May, a French intelligence officer stationed in Clervaux witnessed German troops preparing pontoon bridges in the Sauer. He attempted in vain to contact Captain Archen, and resorted to making a direct phone call to his superiors at Longwy.[7]

Late that evening, the Grand Ducal government came into possession of a document from the German command. Dated 23 April, 1940, it detailed plans for occupying strategic points within the country, and also laid out plans of action for Luxembourgish Nazis.[4]

Luxembourg's border posts were put on full alert. The Grand Ducal Gendarmerie was mobilized to defend public buildings and to start arresting fifth columnists. Interned French pilots and German deserters were released. The economic councilor and the chancellor of the German legation were detained for questioning. It was alleged that they had used legation cars for organizing subversive activities within the country, but since they still enjoyed diplomatic privilege, the police were forced to release them.[4]

Captain Archen eventually received his subordinate's report, but by then he had been told by informants in the Gendarmerie that shots had been exchanged with German operatives at a remote farm near the Moselle. At 11:45 he radioed Longwy: "Reports of important German troop movements on the German-Luxembourg frontier." Throughout the night his messages became more and more frantic. Two Luxembourgish customs officials at Wormeldange heard horses and soldiers across the Moselle, but were unable to make out the Germans' activities due to a heavy fog.[7]

At around midnight Captain Stein, Victor Bodson (the minister of justice), and Joseph Michel Weis (the commissioner of police) held an emergency meeting. Bodson requested that the capital be reinforced by gendarmes from the south, and told Weis to forward this information to the captial's district commissioner to give the necessary orders. Weis would later attempt to contact the district commissioner by phone, but failed to reach him. As such, reinforcements never came.[9]

The steel doors of the Schuster Line were ordered closed on 10 May 1940 at 03:15, following reports of movement of German troops on the east side of the border rivers Our, Sauer, and Moselle. In the meantime, the Abwehr operatives and several German paramilitaries living in Luxembourg—the so-called Stoßtrupp Lützelburg—tried to sabotage the radio stations and the barricades along the German–Luxembourgish border but their attempts were foiled by the Gendarmerie. They were, however, successful in interrupting the demolition of several bridges.[6] The Royal Family was evacuated from its residence in Colmar-Berg to the Grand Ducal palace in Luxembourg City.


Map showing the German invasion routes

The German invasion began at 04:35 when the 1st, 2nd, and 10th Panzer Divisions crossed the border at Wallendorf-Pont, Vianden, and Echternach respectively.[10] Wooden ramps were used to cross over the Schuster Line's tank traps.[6] Fire was exchanged, but the Germans did not encounter any significant resistance save for some bridges destroyed and some land mines, since the majority of the Luxembourgish Volunteer Corps stayed in their barracks. The border was only defended by soldiers that had volunteered for guard duty, customs officials, and gendarmes.[1][4] A handful of Germans secured the bridge at Wormeldange and captured the two customs officers there, who had demanded that they halt but refrained from opening fire.[7] One by one the radio outposts fell. The partly demolished bridge over the Sauer at Echternach was quickly repaired by engineers of the Großdeutschland regiment, allowing for the passage of the 10th Panzer Division. Planes flew overhead, heading for Belgium and France, though some stopped and landed troops within the country.[4]

Captain Archen repeatedly alerted his superiors at Longwy of the invasion, but his reports never reached the 3rd Army at Metz. General Charles Condé, the army's commander, was unclear about the situation and at 05:30 dispatched aerial reconnaissance units to investigate. At 06:00 the French 3rd Light Cavalry Division was ordered to intervene.[8]

Telephone and radio messages from the border posts to the Gendarmerie and Volunteer Corps headquarters informed the Luxembourgish government and Grand-Ducal court of the invasion.[11] Foreign Minister Joseph Bech, in the presence of Prime Minister Pierre Dupong, attempted to contact the German ambassador at the legation and at his private residence, but they were informed that he was not present.[4] At 06:30 the majority of the government, including Dupong and Bech, evacuated the capital via motorcade to the border town of Esch. Here a group of 125 German special operations troops had landed via Fieseler Storch, with orders to hold the area until the main invasion force arrived. A gendarme confronted the soldiers and asked that they leave, but he was taken prisoner.[6] The government motorcade encountered a roadblock at a crossroads manned by the German units and were forced to detour through the countryside to avoid capture.[4] French Ambassador Jean Tripier followed the government party but was stopped by the Germans and forced to return to the capital. Belgian Ambassador Kervyn de Meerendré was also stopped by German soldiers at the border and ordered to turn back.[12]

Following consultation with her minsters, Grand Duchess Charlotte decided to abandon the palace. Accompanied by her husband, Prince Felix, her mother, Dowager Grand Duchess Marie Anne, and members of the Grand-Ducal suite, she departed for the border village of Redange.[4] After a brief stop, her party crossed the border at 07:45.[13] Meanwhile, Hereditary Grand Duke Jean and two of his sisters, accompanied by an Aide-de-camp, were to wait at the border for confirmation of occupation. Around 08:00 the prime minister and his entourage passed over the border before making contact with French troops at Longlaville. Last minute telephone calls with Luxembourg City revealed the capital to be completely surrounded.[4]

Charlotte's party was able to link up with the government motorcade at Longwy. They were joined by the Hereditary Grand Duke at Sainte-Menehould. His party had been held up by the German troops near Esch, and they only escaped when their chauffeur drove straight through the soldiers.[4]

At 08:00, elements of the French 3rd Light Cavalry Division (3 DLC) of General Petiet, supported by the 1st Spahi Brigade of Colonel Jouffault and the 2nd company of the 5th Armoured Battalion (5 BCC), crossed the southern border to conduct a probe of German forces; these units later retreated behind the Maginot Line. Five Spahis were killed.[14] British and French planes bombed Bascharage, damaging the power grid.[2] British Air Marshall Arthur Barratt, impatient with the reluctance of the French Air Force to conduct air strikes, ordered a flight of Fairey Battle bombers from the 226 Squadron to attack German tank columns.[6] They went unescorted and encountered heavy anti-aircraft fire. Most were damaged by flak but managed to escape. One received a direct hit and crashed near Bettendorf. German soldiers pulled the three injured crew from the burning wreckage, one of whom later died in a local hospital.[15]

The Grand Ducal Gendarmerie resisted the German troops, however, to little avail; the capital city was occupied before noon. The Gendamerie chain of command in the south was thrown into disarray by the influx of refugees and the arrival of German and French troops. Most escorted refugees over the border, while some abandoned their posts and fled to France.[9] Total Luxembourgish casualties amounted to six gendarmes and one soldier wounded. 22 soldiers (six officers and 16 non-commissioned officers) and 54 gendarmes were captured.[16]

By the evening of 10 May 1940, most of the country, with the exception of the south, was occupied by German forces. More than 90,000 civilians fled from the canton of Esch-sur-Alzette as a consequence of the advance. 47,000 evacuated to France, 45,000 poured into the central and northern part of Luxembourg.


Grand Duchess Charlotte and the government of Premier Pierre Dupong fled to France, Portugal and the United Kingdom, before finally settling in Canada for the duration of the war. Charlotte, exiled in London, became an important symbol of national unity. Her eldest son and heir, Jean, volunteered for the British Army in 1942. The only official representative left behind was Albert Wehrer, head of the office of State Affairs,[2] as well as the 41 deputies.


  1. The Corps des Gendarmes et Volontaires was under the ceremonial command of Prince Felix, but actual control of the unit rested with Major Speller.[1]


  1. 1 2 Thomas, Nigel (2014). Hitler's Blitzkrieg Enemies 1940: Denmark, Norway, Netherlands & Belgium (illustrated ed.). Bloomsbury Publishing. pp. 15–16. ISBN 9781782005971.
  2. 1 2 3 Waller, George Platt. Defiant Diplomat George Platt Waller: American Consul in Nazi-occupied Luxembourg, 1939-1941
  3. "Luxembourg Army History". National Museum of Military History Diekirch. Musée national d'histoire militaire. Archived from the original on 22 August 2006. Retrieved 6 October 2016.
  4. 1 2 3 4 5 6 7 8 9 10 Government of Luxembourg. Luxembourg and the German Invasion, Before and After, Hutchinson & Co. Accessed 13 March 2016
  5. 1 2 Biographie nationale du pays de Luxembourg : Fascicule 11 (in French). Bibliothèque nationale de Luxembourg. pp. 24.
  6. 1 2 3 4 5 Horne, Alistair, To Lose a Battle, p.258-264
  7. 1 2 3 4 May, Ernest R. (2015). Strange Victory: Hitler's Conquest of France. Hill and Wang. pp. 3–4. ISBN 9781466894280.
  8. 1 2 Kaufmann, J. E.; Kaufmann, H. W. (2 October 2007). Hitler's Blitzkrieg Campaigns: The Invasion And Defense Of Western Europe, 1939-1940. Da Capo Press. p. 176. ISBN 9780306816918.
  9. 1 2 Artuso, Vincent (9 February 2015). "LA « QUESTION JUIVE » AU LUXEMBOURG (1933-1941) L'ETAT LUXEMBOURGEOIS FACE AUX PERSECUTIONS ANTISEMITES NAZIES" (PDF). Le Gouvernement du Grand-Duché de Luxembourg (in French). University of Luxembourg. pp. 138–139. Retrieved 1 September 2015.
  10. Combined Arms in Battle Since 1939. DIANE Publishing. p. 234. ISBN 9781428915374.
  11. Waller, George Platt (2012). Fletcher, Willard Allen; Fletcher, Jean Tucker, eds. Defiant Diplomat George Platt Waller: American Consul in Nazi-occupied Luxembourg, 1939-1941 (reprint ed.). Lexington Books. p. 23. ISBN 9781611493986.
  12. Waller, George Platt (2012). Fletcher, Willard Allen; Fletcher, Jean Tucker, eds. Defiant Diplomat George Platt Waller: American Consul in Nazi-occupied Luxembourg, 1939-1941 (reprint ed.). Lexington Books. p. 29. ISBN 9781611493986.
  13. "Bulletin D'Information" (PDF) (Press release) (in French). Grand Duché de Luxembourg Ministére D'État. 1996. p. 74. Retrieved 1 September 2016.
  14. Raths,Aloyse 2008 Unheilvolle Jahre für Luxemburg – Années néfastes pour le Grand-Duché, p. 7
  15. "75 Jahre danach!". National Museum of Military History Diekirch (in German). Musée National d'Histoire Militaire. 2 July 2015. Retrieved 20 August 2016.
  16. "Bulletin D'Information" (PDF) (Press release) (in French). Grand Duché de Luxembourg Ministére D'État. 31 October 1948. p. 147. Retrieved 1 September 2016.

Further reading

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