Syllabus Edition

First teaching 2024

First exams 2026

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The Trench System at the Western Front (Edexcel GCSE History)

Revision Note

Zoe Wade

Written by: Zoe Wade

Reviewed by: Bridgette Barrett

The Development of Trench Warfare - Summary

British soldiers fought in trenches along the Western Front of the First World War (1914 and 1918).

Trenches were both a blessing and a curse for the soldiers who inhabited them. Dug as a way of protecting soldiers from artillery and machine gun fire, the trenches became a hostile environment.

Soldiers were at risk of trench foot and trench fever. Nevertheless, trenches served an important purpose for both sides during the war. They were defensive obstacles which prevented the occupation of strategic land.

Developments in medicine during the First World War are often linked to trenches and their key features. Alterations in ambulances and x-rays, allowed them to travel between the different sections of the trench system.

The Organisation of Trenches

Why were trenches built?

  • By the end of 1914, Germany occupied much of Belgium and Northern France 

  • Warfare had become more static, with a desire to defend the land that had been gained:

    • Artillery and machine guns forced soldiers to seek cover

  • Trenches were an easy and efficient way of sheltering troops

  • By 1915, there was a complex system of trenches:

    • Trenches were dug to a depth of 2.5 metres

  • They were easy to defend but difficult to attack:

    • Crossing no-man's land exposed troops to barbed wire and machine-gun fire

The trench system

  • The trench system covered around 475 miles from the English Channel to the Swiss Alps

  • Most trench systems followed a similar structure:

    • Front line trenches were the closest to no-man's-land. Attacks started from here

    • Soldiers were able to retreat to support trenches which were 80 metres behind the front line

    • The launch of counter-attacks came from reserve trenches which were at least 100 metres behind the support trenches 

    • The transport of soldiers, equipment and supplies was through the communication trenches

Diagram showing a First World War trench system with labels for artillery emplacements, communications trench, reserve trench, support trench, frontline trench and dugouts. It also identifies the zig-zag pattern of trenches
An illustration showing the trench system on the Western Front

Worked Example

Describe one feature of the trench system on the Western Front

2 marks

Answers:

The reserve trench was a common part of the trench system (1). The reserve trench was used to launch counter-attacks if the frontline trench was captured (1).

Examiner Tips and Tricks

This question previously asked students to describe two features of a given event. This question was out of four marks. However, as of 2025, Edexcel will split this question into two subsections, asking you to describe a feature of two different events. Each subsection is worth two marks.

Try to write your answer in two sentences. Identify the feature in one sentence and provide some additional detail in the other. Remember, the extra information must be relevant to the feature you just stated.

Interior of a trench

  • Trenches began as a collection of foxholes dug by soldiers

  • As the war progressed, trenches developed in several ways. These helped to protect soldiers and also made it easier for them to defend themselves from enemy attacks

  • The experience of soldiers in the trenches varied depending on where along the front they were 

    • In the Alps, trenches were dug deep into the mountains to give soldiers protection from the cold weather conditions

Illustration of a cross-section of a First World War trench labelled with features like the bell for gas warnings, parapet, ammunition shelf, firing step, duckboards and sandbags.
A cross-section of a First World War trench

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Zoe Wade

Author: Zoe Wade

Expertise: History

Zoe has worked in education for 10 years as a teaching assistant and a teacher. This has given her an in-depth perspective on how to support all learners to achieve to the best of their ability. She has been the Lead of Key Stage 4 History, showing her expertise in the Edexcel GCSE syllabus and how best to revise. Ever since she was a child, Zoe has been passionate about history. She believes now, more than ever, the study of history is vital to explaining the ever-changing world around us. Zoe’s focus is to create accessible content that breaks down key historical concepts and themes to achieve GCSE success.

Bridgette Barrett

Author: Bridgette Barrett

Expertise: Geography Lead

After graduating with a degree in Geography, Bridgette completed a PGCE over 25 years ago. She later gained an MA Learning, Technology and Education from the University of Nottingham focussing on online learning. At a time when the study of geography has never been more important, Bridgette is passionate about creating content which supports students in achieving their potential in geography and builds their confidence.