battle, major, First World War
Operation Michael
Operation Michael was a battle fought on 21 March 1918 at Hauts-de-France, in what is now France; it lasted 15 days. It was part of World War I, which ran from 1914 to 1918. The recorded result: See Aftermath section. Recorded strength: 72 divisions against 26 divisions; 3 cavalry; 23 French divisions.
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Where it sits in World War I
Record
| Date | 21 March 1918 to 5 April 1918 | |
|---|---|---|
| Place | Hauts-de-France, France 49.850N, 3.283E | |
| Kind | Battle, First World War | |
| Territorial change | Germans penetrate British lines up to 40 while seizing 1200 of territory | |
| Strength | 72 divisions | 26 divisions; 3 cavalry; 23 French divisions |
| Casualties and losses | 239,800 | 254,816; 177,739; 77,000; 77 |
| Commanders | ||
The ground today


The recorded site stands at about 104 m; within 10.0 km the ground runs from 62 to 152 m, 90 m of relief, gently rolling country and today it is 38% built-up, 28% tree cover, 24% cropland.
Elevation from the Copernicus DEM GLO-30 (ESA, Airbus); land cover from ESA WorldCover 2021 (CC BY 4.0), within about 5 km of the recorded site. Computed, not recorded.Nearest engagements
- Battle of Saint-Quentin 1870, 0.3 km SE
- Battle of St. Quentin 1871, 0.3 km SE
- Battle of St. Quentin 1557, 0.5 km E
- Battle of St. Quentin Canal 1918, 14 km N
- Siege of Le Catelet 1595, 17 km N
Contested ground: this site was fought over 4 times between 1557 and 1918.
In the same war
- Before: Spring Offensive 1918
- After: Battle of Hijla 21 March 1918
- All 594 engagements of World War I
Elsewhere in 1918
- Battle of Kruty Ukraine
- Battle of Tampere Finland
- Battle of Tsaritsyn Russia
- Soviet westward offensive of 1918–1919 Estonia
- Battle of Kyiv Ukraine
Combat data (CDB90)
| Attacker: GER 2ND, 17TH & 18TH ARMIES | Defender: BR 1ST(-), 3RD & 5TH (4TH) ARMIES | |
| Strength | 700,000 | 600,000 |
| Casualties | 133,000 (19.0%) | 140,000 (23.3%) |
| Mission accomplishment, 1 to 10 | 5 | 5 |
| Outcome | drawn | |
| Duration | 2 days | |
| Front width | 140 km | 140 km |
| Attacker advanced | 28 km | |
From the US Army Concepts Analysis Agency Database of Battles (CDB90, battle 331), public domain, in the CC0 tidy edition by Jeffrey B. Arnold. Figures are the database's estimates, compiled in 1990 from published histories, and may differ from the Wikipedia infobox above.
Operation Michael is one of 4,429 engagements of the 20th century in the atlas and one of 1,495 in present-day France.
Sources
Identity, coordinates, dates and the war from Wikidata Q152008, released under CC0. Result, belligerents, commanders, strength and casualties from the infobox of the English Wikipedia article Operation Michael, revision 1370693789, read 2026-11-14, licensed CC BY-SA 4.0; the article's text is not reproduced here. Present-day country and state from Natural Earth. Dates before 1582 follow the Julian calendar as recorded.