August Offensive 5
Pour la vitesse
Chaque film de ce site est disponible pour visionnage en basse vitesse et en haute vitesse.
- Basse vitesse : recommandée si votre accès Internet se fait avec un modem de 56 kbps ou moins. Le visionnage en basse vitesse fournit une moins bonne qualité d'image et de son.
- Haute vitesse : recommandée avec service Internet haute vitesse (ADSL, modem câble) ou avec ordinateur d'institution. Le visionnage en haute vitesse fournit la meilleure qualité d'image et de son. Le visionnage en haute vitesse peut produire des images saccadées et des interruptions occasionnelles de son si la vitesse de votre connexion est insuffisante.
En cas d'hésitation, essayez d'abord de visionner en haute vitesse. Si cela ne fonctionne pas, essayez la basse vitesse.
Pour le format
Les films peuvent être disponibles pour visionnage en format Macromedia Flash et QuickTime. Tous offrent une qualité égale d'image et de son.
- Format Flash : permet de visionner le film directement dans la page Web, sans avoir à ouvrir une application externe. Nécessite le plugiciel Flash (offert gratuitement ici Macromedia Flash Player).
- Format QuickTime : nécessite l'application QuickTime, soit la version 7 ou plus récent (offert gratuitement ici QuickTime).
Sous-titrage pour malentendants (CC)
Consiste à inscrire à l'écran sous forme de sous-titres, la partie sonore d'un film, par exemple les dialogues, la narration, incluant rires, bruits, etc. Ainsi, les personnes vivant avec un handicap auditif peuvent lire ce qu'ils ne peuvent pas entendre. Le sous-titrage est offert pour quelques films. Pour y avoir accès, vous devez sélectionner QuickTime (sous Format) et Avec sous-titrage pour malentendants (sous Accessibilité).
Consiste à offrir une description orale des éléments visuels clés d'un film, de telle sorte que les personnes vivant avec un handicap visuel peuvent concevoir une imagerie mentale en rapport avec le déroulement des images à l'écran. La vidéodescription est offerte pour quelques films. Pour y avoir accès, vous devez sélectionner QuickTime (sous Format) et Avec vidéodescription (sous Accessibilité).
09 min 41 s
Canadian War Records Office, Ministry of Information
Once again, the extraordinary variety of guns employed at the front is clear in this clip. We can appreciate the hard work a gun crew did, but what is not visible is the danger the gunners faced. The enemy, like the Canadians (but not as effectively), maintained elaborate counter-battery operations that aimed to spot the Allied guns and neutralize them. Balloons were used to watch for the flash and gun positions were triangulated. Sound ranging was another location method, and skilled counter-battery work could pinpoint a gun in under three minutes and deliver heavy explosives within a few metres of the position. Guns were also vulnerable to air attack, and soon camouflage netting was employed to break up a gun’s outline. Similarly, as the war wore on, shell fuses became more sophisticated—some were designed to bore into the ground, some to explode on contact with the ground, and some to explode as soon as they touched barbed wire, ideally cutting gaps through which attacking infantry could move.
Pieces of History
Artillery: The Great Killer
Historian, Canadian War Museum
In 1914 and 1915, artillery proved it was the great killer. For those caught in the open, shrapnel and high explosive shells wreacked havoc. Thousands were left rotting on the battlefields. However, artillery guns were vulnerable to small arms fire, and they could be driven away from the front. But the guns were soon firing indirectly from hidden positions several kilometeres to the rear, still causing terrible damage. Soldiers were forced to find safety in trenches, digging beneath the ground to escape the murderous fire.
As trenches were strengthened with barbed wire, deep dugouts, and machine -guns, an enormous weight of fire was needed to smash the enemy defences and support the infantry. But there were not always enough shells in the early years to feed the guns. And so the infantry were killed in the tens of thousands as they attacked undamaged enemy trenches in frontal assaults. As the war lengthened, artillerymen received nearly unlimited supplies of shells through the enormous production of munitions factories. New tactics were also developed to improve the accuracy of the guns.
Artillery shells contained high explosives, shrapnel, and, later in the war, poison gas and smoke. Both the high explosive and shrapnel shells were timed to detonate in the air above a target. High explosive shells blasted holes in the trenches and the concussion alone could kill, as lungs collapsed under the force of the explosion. Shrapnel shells were equally deadly, consisting of more than 300 rounded metal balls that exploded downward in a cone-shaped rain of whirling metal. As well, the casing of the shell was designed to explode outward, creating jagged, uneven shards of steel that tore through flesh.
By 1916, commanders believed that massive artillery shoots, involving hundreds of thousands of shells, would annihilate the enemy defenders. This would allow the infantry to punch a hole through enemy lines and restore mobility on the Western Front.
However, it was often hard to hit, and then destroy, the narrow and well-fortified trenches. The problem also lay in the shell fuses. Earlier types were not sensitive enough to explode on contact, especially with shells tasked to clear barbed wire. As a result, many of the shells exploded in the ground, killing very few of the enemy, leaving the infantry to fight their way through defences-in-depth. By the end of 1916, newer, sensitive fuses that exploded on the slightest contact harnessed the destructive power of the artillery and, equally important to the infantry, cleared barbed wire from in front of enemy trenches.
Tactics again changed during the later phases of the bloody battles of the Somme in the last half of 1916. The gunners would never be able to destroy all of the German defences, and even one machine -gunner could kill hundreds of attacking infantry. Instead, the artillery sought to suppress enemy fire through a “creeping barrage,” and give their own attacking infantry enough time to cross the killing zone of nNo Mman’s Lland.
Gunners fired their shells to create a “creeping” wall of fire that slowly moved forward over the enemy lines at fixed intervals: 50 yards (46 m) every couple of minutes, less for muddy ground, more for open warfare. In effect, it was a screen of fire and explosives. As this moving wall of shrapnel and high explosives chewed up the ground in its path, the infantry were told to “lean into the barrage” and stay as close as possible. Although friendly fire was expected and occurred, the casualties would still be lighter than if the creeping barrage moved off and allowed German machine -gunners, waiting in the safety of deep dugouts, to get to the top of their trenches before the infantry crossed nNo Mman’s lLand.
At the Battle of Vimy Ridge in April 1917, the gunners had perfected the creeping barrage. Yet enemy gunners still took a fearful toll as they laid down their own counter-barrages to catch the follow-on waves of infantry. The enemy guns had to be stopped, or slowed, but it was exceedingly difficult to identify, target, and destroy camouflaged guns several kilometeres away.
Accurate intelligence was essential, and new and refined forms of science aided the gunners. The Canadian Corps was lucky to have Brigadier-General Andrew McNaughton, commander of the counter-battery office for much of the war, who embraced new technology and tactics. A prewar professor at McGill University, he turned to science to save his soldiers lives.
The Canadian Counter Battery Office (CCBO), established in February 1917, gathered intelligence and processed information on the enemy to assist in knocking out his guns. Aerial reconnaissance from the Royal Flying Corps (later Royal Air Force) was of great assistance as airmen photographed the front from great heights. Later in the war, observation aircraft circled the battlefield, passing real-time information to the gunners through letter drops and primitive wireless radio.
As the CCBO developed after April 1917, this information-gathering and target-selection became more sophisticated, with new technology, like sound-ranging and flash-spotting, assisting gunners to find and destroy enemy targets.
Flash-spotting involved the coordination of observers. At least three posts were needed, usually spread out along several kilometeres. When an enemy gun position was spotted by the revealing flash as the shell left the barrel, the observers were telephoned by headquarters to turn their attention to that spot. After studying the flash of the gun, the observers would hit a key that was connected to a lamp at headquarters. From the observers’ bearings, and by triangulating their estimates, enemy guns could be located with high precision.
Sound-ranging worked on a similar principle. Listeners sat two kilometeres behind the line with their microphones. Additional posts were manned well ahead of these positions. As long as there was not more than one shell per second being fired, on hearing the crash of an enemy gun, the forward listening post pressed a key that started an oscillograph, an instrument that recorded on film the sound of the shell in flight as it reached each microphone in turn. The time-intervals between the microphones allowed the CCBO to analyse the information and, if conditions were optimal, pinpoint enemy guns to within twenty-five 25 yards (23 m). All available counter-battery guns would be aimed on that spot to deliver a destructive shoot of 50-100 shells. Chemical shells were also used to kill or force the enemy gunners to wear debilitating respirators that severely affected the rate of fire.
In the last year of the war, artillery had perfected the creeping barrage and was steadily improving its counter-battery work. Further tactical refinement allowed gunners to fire more complicated barrages, like a box barrage. The box barrages set up a wall of fire and explosives around an enemy position —-- usually a trench —-- which effectively isolated it from reinforcements. It allowed assaulting Canadian infantrymen to capture and consolidate a position without fear of immediate counterattack.
By war’s end, 43,914 gunners had served in the Canadian artillery, and 2,565 had lost their lives from disease, injury, and battlefield wounds. They had fired tens of millions of shells, reducing the landscape to a desolate wasteland, and an estimated 60% of all wounds were inflicted by shell fire. The First World War was indeed a gunner’s war.
Cook, Tim. No Place to Run: The Canadian Corps and Gas Warfare in the First World War. Vancouver: University of British Columbia Press, 1999.
McNaughton, A.G.L. “Counter-Battery Work.” Canadian Defence Quarterly 3, 4 (July, 1926).
McNaughton, A.G.L. “The Development of Artillery in the Great War.” Canadian Defence Quarterly 4, 2 (January, 1929).
Nicholson, G.W.L. The Gunners of Canada: The History of the Royal Regiment of the Canadian Artillery, Vol. 1: 1534-1919 Toronto: McClelland & Stewart, 1967.
Rawling, William. Surviving Trench Warfare: Technology and the Canadian Corps, 1914-1918. Toronto: University of Toronto Press, 1992.
Swettenham, John. McNaughton, Volume I. Toronto: The Ryerson Press, 1968.
The Expanding Allied Offensive
The first move in the Allied scheme to extend the stalled Amiens offensive on both wings was made on the southern flank on August 20 1918, when the French Tenth Army of General Mangin struck northward from the Aisne between Compiègne and Soissons with twelve divisions. An advance of nearly five miles in two days carried the assault to the river Oise between Noyon and Chauny. On the 21st the French Third Army (General Humbert) on Mangin's left resumed operations with some success, while on the same day north of Albert the British Third Army initiated Sir Douglas Haig's share in the renewed offensive. General Byng's forces struck a telling blow on the 23rd, when a two-mile advance towards Bapaume netted 5000 prisoners from General Otto von Below's badly shaken Seventeenth Army. This achievement was matched on Haig's right flank, where the Fourth Army had taken up the battle astride the Somme and the 1st Australian Division had shattered two German divisions on the southern bank. The next two days saw some slight progress on both the Third and Fourth Armies' fronts, and on August 26 an expansion of the battle into the First Army's sector brought the Canadian Corps once more into action.
The period of rest and refitting that would normally follow participation in such extensive operations as the Amiens battle was denied the Canadians; for in these last hundred days of the war each major offensive so rapidly succeeded its predecessor that unprecedented demands had to be made on the stamina of the forces employed. Back under General Horne's command in its former position east of Arras, the Canadian Corps was confronted by a series of formidable defence positions which the enemy was holding in strength. Immediately in front of the Canadians, about Monchy-le-Preux, were the old British trenches lost in the German offensive of March 1918, and to the east of these lay the enemy's former front line. This was backed up, two miles east of Monchy, by the so-called Fresnes-Rouvroy line, which was actually an extension south of the Scarpe of the original line joining Rouvroy (south-east of Lens) to Fresnes (north-east of Arras). Another mile to the east the approaches to Cambrai were blocked by the strongest position of all-the Drocourt-Quéant line (the southernmost portion of the Wotan I-Stellung), which, extending northward from the Hindenburg Line (Siegfried-Stellung) at Quéant, had been constructed by the Germans to contain any Allied advance into the Douai plain. Still farther east, crossed by the main road at Marquion, was the unfinished Canal du Nord, connecting the Somme Canal with the Sensée Canal. Though not yet extensively fortified it formed in conjunction with the Sensée marshes a major obstacle.
On August 22 General Currie outlined to his divisional commanders his plans for an attack eastward astride the Arras-Cambrai road. The Canadian Corps had been given the task of forcing the Drocourt-Quéant line south of the Scarpe and advancing to the line of the Canal du Nord. Having thus broken the hinge of the Hindenburg system the Corps was to swing southward and sweep down behind that formidable position in order to deny the Germans opposing the Third Army a rallying ground. On Currie's right the 17th Corps, operating on the Third Army's northern flank, was under orders to cooperate with the Canadian Corps, attacking south-eastward along both sides of the Hindenburg position.
General Currie's was an important and a difficult assignment. The enemy's main defence positions, supplemented by various subsidiary switches and strong points, were among the strongest on the Western Front. The ground was pocked with the scars of 1917 and early 1918, and in the litter of old trenches and fortifications German engineers had found ready-made positions which they had considerably strengthened. Furthermore, topography was on the side of the Germans. The battle area spread over the north-eastern slopes of the Artois Hills, whose summits about Monchy were over three hundred feet above the valley-bottoms of the Scarpe and the Sensée. The latter river, flowing generally eastward, together with its tributaries had dissected the hills into numerous deep valleys. The intervening ridges and high points, often mutually supporting, the enemy had fortified with a skill that demonstrated his mastery in military engineering.
The Germans' general defensive plan at this time was to give up ground in the region of the Lys and Ypres salients and to fight a determined rearguard action in the Somme area. Ludendorff overruled the views of those staffs (in particular Crown Prince Wilhelm's) that favoured a major voluntary retirement into the Hindenburg and adjoining defence systems. His purpose was by means of a gradual fighting withdrawal to wear out the Allied forces before they reached the Hindenburg position, thus gaining time to reorganize behind that formidable defence line. The defences about the Arras-Cambrai road in the Monchy area would form the pivot of any German retirement south of the Scarpe, while the security of Prince Rupprecht's northern armies also depended on retaining them.
These positions became the initial Canadian objective. With the enemy expecting attack, except for the actual hour of assault, surprise was clearly impossible. It would be a case of launching successive frontal, grinding assaults against well-established lines manned by tenacious, alert troops.
Adapted and used with permission from Nicholson, G. W. L., Canadian Expeditionary Force 1914-1919. Ottawa: Queen’s Printer, 1964, p.399-401.
Sounds like Field Guns
Grade Level: Secondary 9-12
Time Allowance: 45 minutes
Films: August Offensive 4, 5
Summary: Students create a film about World War I field guns by choosing film clips and writing poetry that evoke the images and sounds of the guns.
The founder of the National Film Board, John Grierson, made a remarkable film in the 1930s called Night Mail. It showed how a letter written in London, England, to someone in Scotland, was sorted overnight on the train and delivered the next day. A poem about the sorting of the mail was composed especially for the movie and read to great effect as the film played. The poem captured the rhythm of a steam train:
This is the Night Mail crossing the border,
Bringing the cheque and the postal order,
Letters for the rich, letters for the poor,
The shop at the corner and the girl next door….
Letters of thanks, letters from banks,
Letters of joy from the girl and the boy,
Receipted bills and invitations
To inspect new stock or visit relations.
(See the full text at: www.newearth.demon.co.uk/poems/lyric206.htm)
Field guns (and not machine guns, rifles or tanks) were responsible for most of the dead in World War I. Approximately 25% of the war dead were never found and were counted as missing in action because they were blown up by field gun shellfire. John McCrae wrote In Flanders Fields in memory of a friend killed by artillery.
In the same way that John Grierson captured the spirit of the Night Mail through film and poetry, write a poem and choose film clips from August Offensive 4, 5 to capture the spirit of the field guns of World War I. These weapons were not as imposing as tanks or airplanes but they were the most deadly weapons of all in this war.
• Either choose the film clips to match the poetry or write the poetry to match the film clips.
• Use poetic techniques such as:
Onomatopoeia (the sound and the word are the same)
Similes (comparisons using like or as)
Metaphors (comparisons that state something as something else: “guns are swords of death”)
Rhyme (words that end in similar sounds)
Alliteration (repetition of consonants: guns, groaned, grandly)
• Try to capture the mood of the guns as used in this war.
• Capture a sense of this period using words and phrases of the time, such as “going over the top” or “trench war.”
Title of your film:
Description of film clips from August Offensive 4, 5