Heraclius here managed to score a decisive...
Cover image: The photograph depicts German soldiers engaged in urban warfare, maneuvering through streets and built-up areas under siege conditions. Although this image originates from the Warsaw Uprising of 1944, it serves as a representative illustration of the type of urban defensive operations conducted by German forces during the Siege of Dunkirk (1944–45), where similar close-quarters combat and fortified positions defined the tactical environment.
The Situation and the Opponents
Source here
After the Allied landing in Normandy landings in June 1944 and the gradual dismantling of German positions, many fortified points of the Atlantic Wall remained under German control. By order of Adolf Hitler on 4 September 1944, they were declared fortresses whose garrisons were not to surrender the important ports/positions to the enemy.
The cities of Dieppe and Ostend fell quickly. Calais followed the same fate on 30 September after a five-day battle. Nearby Dunkirk—the city-symbol of the successful Allied evacuation in 1940 during the Dunkirk evacuation—would become an impregnable fortress that would remain in German hands until the end of the war.
The determined commander, Vice Admiral Friedrich Frisius, inspired the 11,238 defenders of Dunkirk, who came from various units such as the Wehrmacht’s 226th, 346th, 711th, and 49th Divisions, as well as from the Navy and the Air Force, weakened from the retreating battles in France. They possessed 85 guns of various calibers, from 75 to 200 mm. Among them were also about 2,000 men of the Waffen-SS.
The force was divided into five sectors, and a perimeter of up to 10 miles was established in the surrounding villages—from Nieuwpoort to the northeast and Loon-Plage, Bergues, and Spycker to the south and southeast—fortifying every possible entrance to the city. Supplies and munitions were sufficient at least until August 1945.
Source here
The role of the besieging force was assigned to the Canadian Army, with rotating units including the 5th Infantry Brigade, the 4th Special Service Brigade, and the 154th Infantry Brigade, and later the 1st Czechoslovak Armoured Brigade. Their mission was surveillance, harassment, and reconnaissance attacks.
The location of the city offered obvious advantages to the defenders. Canals divided the city into defensive sectors, creating natural obstacles. Streets were blocked by barricades made from rubble—typical of any city that had suffered aerial bombardment. A prisoner-of-war camp was even established, holding 60 British, Canadian, and French resistance fighters. By 5 October, the civilian population had almost completely evacuated.
The Siege
From 7–8 September to 15 September, elements of the 2nd Canadian Division conducted offensive actions, gradually reducing the defenders’ pocket by capturing surrounding villages and settlements such as Bourbourg, Bray-Dunes, Diveled, Ghyvelde, and entered Bergues.
In Loon-Plage there was strong resistance, with significant losses on both sides. By the end, each Allied company typically numbered around 30 men. The attackers struggled to advance through flooded streets and open fields. Spycker was captured on 12 September by a two-company assault but immediately faced a counterattack and heavy fire. Some German coastal guns were rotated 180 degrees to fire on the attackers as well.
Eventually, the Allied brigade forces withdrew and regrouped at Bourbourg. A night raid on 15 September was successful, capturing 25 German soldiers. However, attempts the same day to cross the canal failed. Canadian losses totaled around 300, leading to the decision to place the city under siege, as another direct assault would have caused far higher casualties.
The 4th, 5th, and 6th Brigades of the 2nd Canadian Division were subsequently ordered to take part in the Battle of Antwerp and were replaced by other Canadian units (the 154th Brigade). On 6 October, Czechoslovak forces arrived, along with additional British units (7th Royal Tank Regiment) and French forces, accompanied by a mix of vehicles, tanks, and other weapons.
However, German defense under Friedrich Frisius remained active and highly effective. Frisius noticed the continuous rotation of observation units, and during one of the raids/counterattacks in Ghyvelde and Bray-Dunes, the Germans managed to capture the command center of the 7th Highlanders Argyll and Sutherland Brigade.
From 3–6 October, 17,000 civilians, British prisoners, and German wounded were evacuated from the city after a brief truce, primarily to allow more supplies to reach Frisius’s men. The Czechoslovak forces continued raids and offensive operations, capturing 300 Germans on 28 October at a cost of roughly 130 casualties. Despite these actions, the defenders’ positions remained unchanged.
Operation “Blücher”
In April 1945, while the Third Reich was collapsing and Dunkirk was completely isolated, the German commander decided to launch a strong counterattack. The assault was scheduled for dawn on 5 April 1945. Meanwhile, the isolated German garrison received limited supplies by sea via Seehund two‑man midget submarines. Normally armed with two torpedoes, these Type XXVIIB midget submarines were modified for the supply missions on 28 April and 2 May 1945, with their torpedoes replaced by special containers for food and essentials, nicknamed “butter torpedoes.” On the return voyages the containers were used to carry mail and messages from the garrison back to German ports.
With heavy artillery support, the Germans struck the unsuspecting Czechoslovaks. Despite determined resistance, the defense collapsed under the offensive momentum, and positions fell one by one. The Germans even managed to retake the entire old perimeter that the Canadians had captured in September 1944. When the news reached the British High Command, panic ensued. The Canadians rushed to support the retreating Czechoslovaks while the Royal Air Force tried to slow the German advance with continuous strikes. Engineers began demolishing the perimeter bridges to halt the enemy.
The reorganized Czechoslovak forces, along with the Canadians, launched a counterattack with full air support but failed to regain any ground. The Czechoslovaks suffered 768 casualties: 207 killed or missing and 461 wounded. The German attack penetrated 15 km into Allied lines. Subsequent Allied counterattacks were ineffective until 4 May, and five days later the German force surrendered. It is noteworthy that they formally surrendered on 9 May 1945, two days after Germany’s unconditional surrender on 7 May 1945.
German losses during the nine-month siege and the final attack totaled about 1,000 men. Allied losses are not fully documented: Canadian losses in the September 1944 operations were at least 300, Czechoslovak losses during Operation Blücher and on 28 October were 910, and British losses are unknown, including those from smaller operations, raids, and artillery fire.
Sources:
https://warhistory.org/@msw/article/operation-blucher-2
https://geo2.scholarsportal.info/#r/details/_uri@=WWIIMMDunkerque_1944_TIFF&_add:true
Operation Blücher: The Last German Attack in France, April 1945
Final offensive in Western Front : Operation “Blücher”, April 1945
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Cover image: The photograph depicts German soldiers engaged in urban warfare, maneuvering through streets and built-up areas under siege conditions. Although this image originates from the Warsaw Uprising of 1944, it serves as a representative illustration of the type of urban defensive operations conducted by German forces during the Siege of Dunkirk (1944–45), where similar close-quarters combat and fortified positions defined the tactical environment.
The Situation and the Opponents
Source here
After the Allied landing in Normandy landings in June 1944 and the gradual dismantling of German positions, many fortified points of the Atlantic Wall remained under German control. By order of Adolf Hitler on 4 September 1944, they were declared fortresses whose garrisons were not to surrender the important ports/positions to the enemy.
The cities of Dieppe and Ostend fell quickly. Calais followed the same fate on 30 September after a five-day battle. Nearby Dunkirk—the city-symbol of the successful Allied evacuation in 1940 during the Dunkirk evacuation—would become an impregnable fortress that would remain in German hands until the end of the war.
The determined commander, Vice Admiral Friedrich Frisius, inspired the 11,238 defenders of Dunkirk, who came from various units such as the Wehrmacht’s 226th, 346th, 711th, and 49th Divisions, as well as from the Navy and the Air Force, weakened from the retreating battles in France. They possessed 85 guns of various calibers, from 75 to 200 mm. Among them were also about 2,000 men of the Waffen-SS.
The force was divided into five sectors, and a perimeter of up to 10 miles was established in the surrounding villages—from Nieuwpoort to the northeast and Loon-Plage, Bergues, and Spycker to the south and southeast—fortifying every possible entrance to the city. Supplies and munitions were sufficient at least until August 1945.
Source here
The role of the besieging force was assigned to the Canadian Army, with rotating units including the 5th Infantry Brigade, the 4th Special Service Brigade, and the 154th Infantry Brigade, and later the 1st Czechoslovak Armoured Brigade. Their mission was surveillance, harassment, and reconnaissance attacks.
The location of the city offered obvious advantages to the defenders. Canals divided the city into defensive sectors, creating natural obstacles. Streets were blocked by barricades made from rubble—typical of any city that had suffered aerial bombardment. A prisoner-of-war camp was even established, holding 60 British, Canadian, and French resistance fighters. By 5 October, the civilian population had almost completely evacuated.
The Siege
From 7–8 September to 15 September, elements of the 2nd Canadian Division conducted offensive actions, gradually reducing the defenders’ pocket by capturing surrounding villages and settlements such as Bourbourg, Bray-Dunes, Diveled, Ghyvelde, and entered Bergues.
In Loon-Plage there was strong resistance, with significant losses on both sides. By the end, each Allied company typically numbered around 30 men. The attackers struggled to advance through flooded streets and open fields. Spycker was captured on 12 September by a two-company assault but immediately faced a counterattack and heavy fire. Some German coastal guns were rotated 180 degrees to fire on the attackers as well.
Eventually, the Allied brigade forces withdrew and regrouped at Bourbourg. A night raid on 15 September was successful, capturing 25 German soldiers. However, attempts the same day to cross the canal failed. Canadian losses totaled around 300, leading to the decision to place the city under siege, as another direct assault would have caused far higher casualties.
The 4th, 5th, and 6th Brigades of the 2nd Canadian Division were subsequently ordered to take part in the Battle of Antwerp and were replaced by other Canadian units (the 154th Brigade). On 6 October, Czechoslovak forces arrived, along with additional British units (7th Royal Tank Regiment) and French forces, accompanied by a mix of vehicles, tanks, and other weapons.
However, German defense under Friedrich Frisius remained active and highly effective. Frisius noticed the continuous rotation of observation units, and during one of the raids/counterattacks in Ghyvelde and Bray-Dunes, the Germans managed to capture the command center of the 7th Highlanders Argyll and Sutherland Brigade.
From 3–6 October, 17,000 civilians, British prisoners, and German wounded were evacuated from the city after a brief truce, primarily to allow more supplies to reach Frisius’s men. The Czechoslovak forces continued raids and offensive operations, capturing 300 Germans on 28 October at a cost of roughly 130 casualties. Despite these actions, the defenders’ positions remained unchanged.
Operation “Blücher”
In April 1945, while the Third Reich was collapsing and Dunkirk was completely isolated, the German commander decided to launch a strong counterattack. The assault was scheduled for dawn on 5 April 1945. Meanwhile, the isolated German garrison received limited supplies by sea via Seehund two‑man midget submarines. Normally armed with two torpedoes, these Type XXVIIB midget submarines were modified for the supply missions on 28 April and 2 May 1945, with their torpedoes replaced by special containers for food and essentials, nicknamed “butter torpedoes.” On the return voyages the containers were used to carry mail and messages from the garrison back to German ports.
With heavy artillery support, the Germans struck the unsuspecting Czechoslovaks. Despite determined resistance, the defense collapsed under the offensive momentum, and positions fell one by one. The Germans even managed to retake the entire old perimeter that the Canadians had captured in September 1944. When the news reached the British High Command, panic ensued. The Canadians rushed to support the retreating Czechoslovaks while the Royal Air Force tried to slow the German advance with continuous strikes. Engineers began demolishing the perimeter bridges to halt the enemy.
The reorganized Czechoslovak forces, along with the Canadians, launched a counterattack with full air support but failed to regain any ground. The Czechoslovaks suffered 768 casualties: 207 killed or missing and 461 wounded. The German attack penetrated 15 km into Allied lines. Subsequent Allied counterattacks were ineffective until 4 May, and five days later the German force surrendered. It is noteworthy that they formally surrendered on 9 May 1945, two days after Germany’s unconditional surrender on 7 May 1945.
German losses during the nine-month siege and the final attack totaled about 1,000 men. Allied losses are not fully documented: Canadian losses in the September 1944 operations were at least 300, Czechoslovak losses during Operation Blücher and on 28 October were 910, and British losses are unknown, including those from smaller operations, raids, and artillery fire.
Sources:
https://warhistory.org/@msw/article/operation-blucher-2
https://geo2.scholarsportal.info/#r/details/_uri@=WWIIMMDunkerque_1944_TIFF&_add:true
Operation Blücher: The Last German Attack in France, April 1945