Key Facts
- Date of attack
- 21 May 1916
- German casualties
- 1,344
- British casualties
- 2,475
- Total casualties
- 3,819
- Operation codename
- Unternehmen Schleswig-Holstein
Strategic Narrative Overview
The Germans, hampered by manpower shortages and difficult scarp-slope geology requiring deeper preliminary shafts, planned a pre-emptive strike to seize British front-line positions and block gallery entrances. On 21 May 1916 German forces attacked and successfully consolidated their objectives. British counter-attacks failed to retake the lost ground. The operation gave Germany greater defensive depth and temporarily neutralised the immediate mine threat from British tunnelling operations on the ridge.
01 / The Origins
After the Third Battle of Artois ended in late 1915, the French Tenth Army held the western slope of Vimy Ridge while the German 6th Army occupied the steeper eastern slope. When the Battle of Verdun drew away French forces in early 1916, British armies replaced them and continued French mine-warfare operations. The British dip-slope position gave them a natural tunnelling advantage, enabling horizontal galleries under German lines, threatening German positions with mine detonations.
03 / The Outcome
Germany held its captured positions. A British plan to retake the front line and seize the German side of the ridge was cancelled as resources were diverted to the forthcoming Battle of the Somme, with the Attack on the Gommecourt Salient taking precedence. British operational planning developed during this period nonetheless, forming the foundation for the far larger and successful Battle of Vimy Ridge conducted by the Canadian Corps in April 1917.
Belligerents & Mobilization Analysis
Side A
1 belligerent
Side B
1 belligerent
Kinetic Engagement Axis
Scroll horizontally to view full axis. Events plotted relatively.