Battle of the Somme 1916: 141 Days, Over a Million Casualties and What It Changed
The Battle of the Somme was an Anglo-French offensive fought from 1 July to 18 November 1916 along the Somme river in northern France. It lasted 141 days, cost more than one million killed, wounded and missing on all sides, and gained the Allies only about 8-10 km of ground without the breakthrough Field Marshal Douglas Haig had hoped for. Its first day, 1 July 1916, is still the bloodiest in British Army history: 57,470 casualties, including 19,240 dead. The battle eased the pressure on Verdun, introduced the tank and wore down the German army, which fell back to the Hindenburg Line in early 1917.
This article is for readers who want a clear account of why the Allies attacked on the Somme, what happened on day one and whether the battle can be called a victory, including what its lessons mean in a strategy game set in 1914-1918.
The Battle of the Somme in numbers
- Dates: 1 July - 18 November 1916, 141 days (some historians end it on 13 November).
- Day one: 57,470 British casualties, including 19,240 dead.
- Overall losses: about 420,000 for the British Empire (419,654 in the commonly cited count) and about 200,000 for France (204,253).
- German losses: disputed, with estimates up to roughly 650,000.
- Ground gained: about 8-10 km at the deepest point.
- Tanks: first used in battle on 15 September 1916, with 49 Mark I machines ready for action.
Why the Allies attacked on the Somme
At the Chantilly conference in December 1915 the Allies agreed to launch coordinated offensives in 1916 on the Western, Eastern and Italian fronts. The Somme was chosen because the British and French armies met there. The original plan called for a mainly French attack, but the German assault on Verdun, which began on 21 February 1916, swallowed French reserves. The main force on the Somme became the British Fourth Army under General Sir Henry Rawlinson, commanded overall by Haig.
The goals were threefold: relieve Verdun, wear down the German army and, as Haig hoped, break through the front. Russia helped as well: the Brusilov Offensive that began on 4 June pulled German reserves east, as described in our article on the Eastern Front.
Much of the British infantry were volunteers of Lord Kitchener's New Army, including "Pals battalions" recruited from the same town or workplace. For most of them the Somme was their first major battle.
The week-long bombardment and the mines
From 24 June the British artillery fired roughly 1.5 million shells at the German lines over seven days. The idea was to cut the barbed wire and destroy the defenders before the infantry advanced. In practice many shells were duds, shrapnel often failed to cut the wire, and German troops sheltered in deep dugouts and came out when the barrage lifted. Our WW1 artillery article explains why firepower alone so rarely delivered a breakthrough.
Just before the attack, mines were blown under German positions. The largest, at Lochnagar near La Boisselle, held about 27 tonnes of explosive and left a crater roughly 100 m across that can still be visited. The story of the tunnellers is told in underground war in WW1.
1 July 1916: the bloodiest day in British history
At 07:30 the infantry climbed out of their trenches and advanced. In the south, where the British attacked alongside the French and the bombardment had been more effective, the Allies reached their objectives, including the village of Montauban. In the north, at Gommecourt, Serre, Beaumont-Hamel and Thiepval, the attacks collapsed under German machine gun and artillery fire. The Newfoundland Regiment lost about 90% of its roughly 800 men at Beaumont-Hamel in around half an hour.
By nightfall the British Army had suffered 57,470 casualties, including 19,240 dead - the worst single day in its history.
Four months of attrition: July to November
Haig did not stop. Instead he switched to smaller attacks: Bazentin Ridge (14 July), Delville Wood, Pozières, where Australian troops took the ridge at heavy cost, and Guillemont. On 29 August Erich von Falkenhayn was replaced as chief of the German General Staff by Paul von Hindenburg, with Erich Ludendorff as his deputy, partly because of the strain of Verdun and the Somme together. The grinding fighting is the same kind of stalemate we describe in trench warfare.
Tanks make their debut at Flers-Courcelette
On 15 September 1916 the British used tanks for the first time, in the Battle of Flers-Courcelette (15-22 September). Of the 49 Mark I tanks ready for action, fewer than half reached the German lines; many broke down or got stuck. Even so, they helped take the villages of Flers and Courcelette, and the concept was proven. Read more in our WW1 tanks article.
How the battle ended and who won
Autumn rain turned the battlefield into mud, and the offensive petered out in the Battle of the Ancre (13-18 November). The Allies had advanced about 8-10 km at the deepest point and never reached Bapaume, one of the first-day objectives. In early 1917 the Germans withdrew to the shorter Hindenburg Line, giving up much of the ground they had defended.
So who won? Not in the sense of a breakthrough, which never came. But the Allies relieved Verdun, inflicted heavy losses on the German army and learned hard lessons. Critics call Haig's approach wasteful; defenders point out that the army that emerged from the Somme refined creeping barrages, counter-battery fire and tank-infantry cooperation and used them in 1918. Most historians therefore describe it as a costly Allied success in attrition terms, not a clear victory.
The battle left a deep mark on memory. The Thiepval Memorial lists more than 72,000 British and South African soldiers who died on the Somme and have no known grave. The 1916 documentary The Battle of the Somme was seen by an estimated 20 million people in Britain within weeks, and J. R. R. Tolkien served there as a signals officer and lost close friends.
What the Somme teaches about strategy
- Firepower is not preparation. A week of shelling did not destroy the dugouts or the wire; reconnaissance and shell quality mattered more than volume.
- Plan for the second day. An offensive without reserves and supply ends in mud, as autumn 1916 showed.
- Attrition cuts both ways. Germany lost heavily too; the side that replaces losses and learns faster wins the long game.
- New tools need time. Tanks were unreliable in 1916 but decisive when combined with infantry and artillery in 1918.
How Somme lessons work in Frontkrieg
In Frontkrieg, a free browser strategy game about World War 1, the same questions return in every campaign. How to prepare an attack and avoid feeding units in piecemeal is covered in our guide to offensive tactics. Pulling shattered units back to recover instead of throwing them into a lost fight is explained in the army repair guide, and the wider picture of other great battles is in the biggest battles of World War 1. For the full human cost of the war, see WW1 casualties.
Frequently asked questions
How many people died at the Battle of the Somme?
Total casualties (killed, wounded and missing) exceeded one million. On the Allied side they came to about 624,000 (419,654 British Empire and 204,253 French), of whom roughly 146,000 were killed or missing. German figures are disputed.
Who won the Battle of the Somme?
Neither side won decisively. The Allies gained about 8-10 km, relieved Verdun and wore down the German army, but there was no breakthrough. Most historians call it a costly Allied success in attrition rather than a clear victory.
What happened on the first day of the Battle of the Somme?
At 07:30 on 1 July 1916 British and French infantry attacked along the front. They succeeded in the south but were halted in the north, and the British suffered 57,470 casualties, including 19,240 dead, the worst day in British Army history.
Why is the Battle of the Somme so famous?
Because of its scale and its first day, because tanks debuted there on 15 September 1916, and because it became the British symbol of attrition warfare, much as Verdun is the French one.
Conclusion
The Battle of the Somme in 1916 did not break the Western Front, but it relieved Verdun, wore down the German army and taught the Allies the tactics they would use to win in 1918. Its first day, with 57,470 British casualties, remains a stark lesson in what happens when preparation and reality do not match.
Want to face the same decisions yourself? Start a match in Frontkrieg: a new game begins every day, it is free with no pay-to-win, and more history and strategy articles are in our blog.
Source: Battle of the Somme - Wikipedia