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Battle of Cambrai

1917 · Cambrai (now northern France) · World · Modern

On the first day, the British broke through the German Hindenburg Line with massed tanks and advanced several kilometers, but the following infantry failed to come up and consolidate in time, and ten days later a German counterattack retook most of the lost ground.

Belligerents

United Kingdom

Commanders
Julian Byng
Strength
Over 400 tanks committed, plus several infantry corps

German Empire

Commanders
Georg von der Marwitz
Strength
Defenders plus several reinforcing divisions

Background

With trench warfare on the Western Front deadlocked, the British aimed to use massed formations of the new weapon, the tank, together with a surprise bombardment to break through the carefully built German Hindenburg Line in one stroke.

Course of the battle

  1. Tank surprise attackWithout a long preparatory bombardment, the British suddenly launched a massed charge with hundreds of tanks and broke through the German trench lines at a stroke.
  2. Weak follow-upThe infantry and cavalry failed to exploit the success in time, and the advance gradually stalled.
  3. German counterattackThe Germans brought up reserves for a counterattack and used infiltration tactics to retake most of the lost ground.

Outcome at a glance

Date1917
PlaceCambrai (now northern France)
ResultOn the first day, the British broke through the German Hindenburg Line with massed tanks and advanced several kilometers, but the following infantry failed to come up and consolidate in time, and ten days later a German counterattack retook most of the lost ground.
WinnerNo decision (an initial British breakthrough, later retaken by a German counterattack)
CasualtiesEach side suffered over 40,000 casualties.
Territorial changeThe front largely returned to its pre-battle position, with no decisive breakthrough.

Impact

The Battle of Cambrai was the first real test of tanks used on a large scale and in an organized way to break through prepared defenses. It proved that massed armor could break through a trench system and profoundly shaped the later development of armored tactics.

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