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Battle of St Quentin Canal
Part of The Hundred Days Offensive on the Western Front of World War I
"Breaking the Hindenburg Line" by William Longstaff
Breaking the Hindenburg Line by William Longstaff.
Date September 29 - October 10, 1918
Location Hindenburg Line, France
Result Decisive Allied victory
United Kingdom United Kingdom

 United States

German Empire Germany
Australia John Monash
14 divisions (including 2 from the American Expeditionary Force) [1] At least 13 divisions [2]

The Battle of St Quentin Canal began on 29 September 1918 and involved Canadian, British, Australian and American forces spearheaded the attack against the German Siegfried Stellung of the Hindenburg Line.


After the German Spring Offensive, British, Commonwealth, French and American counter attacks (the Hundred Days Offensive) brought the Allies back up against the outposts of the Hindenburg Line close to the village of Bellicourt by the Autumn of 1918 (the Battle of Épehy).

American forces were ordered to attack on 27 September, to finish clearing German forces from outposts in front of the line. However, due to a shortage of American officers (there were only 18 officers in the 12 attacking companies - the remainder were absent receiving further training), the attack was unsuccessful. As a result of the confusion created by this attack (with the Corp command being unsure of where the American troops were), the attack on 29 September had to be started without the customary (and highly effective) artillery support - this was to have a large negative effect on the initial operations of the battle.

The battle

The British High Command had fully realised that any success against the formidable defences of the Hindenburg Line could only be achieved with the use of tanks.

On 29 September, the Australian Corps attacked, this time with the addition of two American Divisions from the American II Corp (the US 27th and 30th Divisions), supported by approximately 150 tanks of the 4th and 5th tank brigades (including the new trained American 301st Heavy Tank Battalion). The US divisions launched the initial attack, with the Australian 3rd and 5th Divisions intended to "leapfrog" through the American forces. The inexperienced Americans did not clear German positions as effectively as they might have (due to the confusion created during the attack on 27 September). This forced the advancing Australians to fight for the ground that the Americans were planned to have already taken. In the confusion of battle, some American pockets that had been left without effective leadership willingly went along with the Australians as they advanced and there are documented accounts of soldiers from both nations fighting alongside each other in ad-hoc mixed outfits.

The British 46th Division crossed the St Quentin Canal (defended by fortified machine gun positions), capturing 4200 German prisoners (out of a total for the army of 5300).

On 2 October the British 46th and 32nd Division supported by the Australian 2nd Division planned to capture the Beaurevoir Line (the 3rd line of defenses of the Hindenburg Line), the village of Beaurevoir and the heights overlooking the Beaurevoir Line. While the attack succeeded in widening the breach in the Beaurevoir Line, it was unable to seize the high ground further on.

Continuing attacks from 3 October to 10 October (including the 2nd Division capturing Montbrehhain on 5 October) managed to clear the fortified villages behind the Beaurevoir Line, and capture the heights overlooking the Beaurevoir Line - resulting in a total break in the Hindenburg Line.


  1. ^ [1] The Long, Long Trail - The Battles of the Hindenburg Line
  2. ^ C.E.W. Bean, Volume VI – The Australian Imperial Force in France during the Allied Offensive, 1918 (1st edition, 1942), pages 984, 985, 986, 995, 1008, 1013 and 1027 lists the following German divisions facing the attack: 54th, 121st, 185th, 75th Reserve, 21st, 2nd Guards, 2nd, 119th, 241st, 54th, 24th, 8th and 21st Reserve divisions. NOTE: That this list is incomplete, as it doesn't include the forces facing the Allies after the 5th of October.



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