Published: 21 January 2026

The most convenient way to explore the gas attack sites of the Second Battle of Ypres is to join Visit Flanders Fields on a private WWI battlefield tour from Bruges. In spring 1915, the German Army released chlorine gas against Allied lines north of Ypres, marking the first large‑scale chemical attack on the Western Front. Today, memorials and preserved sites such as the St Julien (Brooding Soldier) memorial, Essex Farm Dressing Station and Lijssenthoek Military Cemetery tell the story of how soldiers endured and how medicine struggled to cope. Travelling with a knowledgeable guide ensures you understand both the strategy and the human cost while enjoying seamless transport from Bruges.

The first chlorine gas attack at Ypres

In April 1915 the Germans prepared a limited offensive against the Ypres Salient, deploying 168 tons of chlorine gas in 5,730 cylinders along the Langemark‑Poelkapelle sector. At 5 p.m. on 22 April, they opened the gas valves; a green‑yellow cloud drifted over a four‑mile stretch held by the French 45th (Algerian) Division. Men suffocated or fled as the gas burned their throats and eyes. Although most of the cloud missed the Canadians to the right, the sudden collapse of the French flank exposed a huge gap in the Allied line.

Canadians hold the line

For the next four days, the Canadian 1st Division fought to close that gap. On 24 April the Germans released a second chlorine attack directly against the Canadians. The Canadians counterattacked, buying precious time for reinforcements. They improvised rudimentary gas protection by pressing cotton pads soaked in chemicals or even urine over their mouths and noses. The stubborn defence cost them about 6,000 casualties, but it prevented a German breakthrough and earned the division a reputation for toughness. A granite column known as the St Julien Memorial or Brooding Soldier now marks the battlefield where 18,000 Canadians withstood the first gas attacks and where 2,000 fell. The memorial commemorates the Canadian 1st Division’s stand in the face of poison gas.

Sites to visit: St Julien, Essex Farm and Lijssenthoek

A private gas‑warfare tour from Bruges typically begins at Vancouver Corner near the village of Saint Julien, where the Brooding Soldier stands amid a small park. Your guide will explain how the memorial was designed by architect Frederick Chapman Clemesha and unveiled in 1923. The inscription reminds visitors that this was the first battlefield to witness mass poison‑gas attacks. Next, travel to Essex Farm Cemetery north of Ypres, a site where an Advanced Dressing Station (ADS) operated from April 1915 to August 1917 and where Lieutenant Colonel John McCrae wrote the poem “In Flanders Fields”. McCrae, a Canadian medical officer, composed the lines after burying his friend Alexis Helmer; the poem was first published in December 1915 and has become a lasting symbol of remembrance. The cemetery contains 1,199 burials and preserves the concrete bunkers of the ADS. Finally, drive west to Lijssenthoek Military Cemetery near Poperinge. During the war this village lay on the main communication line between Allied bases and the Ypres battlefields; its location just outside the range of German guns made it ideal for casualty clearing stations. Rail tracks were built to bring wounded from the front and to evacuate them to hospitals on the French coast. With 10,785 burials, Lijssenthoek is the second‑largest Commonwealth cemetery in Belgium after Tyne Cot and stands as a stark reminder of the scale of casualties during and after the gas attacks.

Understanding gas warfare

The Second Battle of Ypres was the first time chlorine gas was employed on such a scale. Early Allied responses were improvised; soldiers used handkerchiefs soaked in bicarbonate of soda or urine to neutralise the gas. Within weeks more effective respirators were developed, including the Hypo helmet and later the Small Box Respirator, which provided better protection. Gas remained a feared weapon throughout the war, leading to the development of gas alarms, anti‑gas training and improved trench design. Visiting the memorials and dressing stations gives travellers insight into how quickly the front adapted to new horrors and how medical teams coped with mass casualties.

Practical information

• Duration: Plan for a 7–8 hour tour from Bruges, including travel to Ypres, St Julien, Essex Farm and Lijssenthoek. Additional time allows for reflection at each memorial.
• Pickup point: Private tours depart from your accommodation in Bruges. Comfort and flexibility are hallmarks of Visit Flanders Fields tours.
• Tour inclusions: Stops at the Brooding Soldier memorial, Essex Farm dressing station and Lijssenthoek Military Cemetery. Entrance fees, a specialist guide and transport are included. Visitors should wear layers and be prepared for changeable weather.
• Accessibility & seasonality: All sites are accessible year‑round. Essex Farm’s bunkers involve some steps and low ceilings; Lijssenthoek has level paths suitable for wheelchairs. Spring offers mild temperatures and poppies in bloom, while winter is quieter but can be wet.

Call to action

Ready to stand where gas drifted across the trenches and inspired poetry? Book your private Second Ypres gas‑warfare tour through Visit Flanders Fields today. Discover our full range of experiences on the Flanders Battlefield Day Tours page and dive deeper into history with our story on medical evacuation in Flanders.

FAQs

1. Where were the gas attacks of the Second Battle of Ypres launched? The first chlorine gas attack on 22 April 1
2. 915 targeted French and Algerian troops north of Ypres in the Langemark sector. A second attack on 24 April was directed at the Canadian 1st Division.
3. What memorial commemorates the Canadian stand against gas? The St Julien (Brooding Soldier) Memorial marks Vancouver Corner where 18,000 Canadians withstood the first gas attacks and 2,000 fell. Its inscription reminds visitors of the bravery shown in April 1915.
4. Why visit Essex Farm and Lijssenthoek? Essex Farm was the dressing station where John McCrae wrote In Flanders Fields. Lijssenthoek housed major casualty clearing stations and now contains 10,785 graves, making it the second‑largest Commonwealth cemetery in Belgium.