The Defence of Folkestone During the Second World War

1. Why Was Folkestone So Important?

Folkestone occupied a strategically important position on the Kent coast, approximately 22 miles from German-occupied France. Its harbour, beaches, railway connections and surrounding high ground made it a potential objective during Operation Sea Lion, Germany's planned invasion of Britain.

Following the evacuation of Dunkirk in 1940, the British Army rapidly strengthened the defences of Folkestone, Hythe and the surrounding countryside.

2. The Coastal Artillery Batteries of Folkestone

Coastal artillery was a central element of Folkestone's wartime defences. Guns positioned along the coast were intended to engage hostile ships, landing craft and other maritime threats.

Emergency batteries were constructed during the invasion scare of 1940, while the larger Capel Battery was developed during 1941–1942.

Copt Point Battery

Situated east of Folkestone Harbour, Copt Point Battery was equipped with two 6-inch Mark XI naval guns. The battery was associated with 550 Coast Regiment, Royal Artillery.

By 1943, the defensive complex included gun emplacements, observation facilities, slit trenches, barbed wire, anti-tank weapons, Bofors anti-aircraft guns and searchlights.

Surviving features of the battery remain visible today. The former observation post has subsequently been used by the National Coastwatch Institution.

3. The German Invasion Threat of 1940

Following the fall of France, the British government feared that German troops might attempt to land on the south coast of England.

Folkestone was designated a defended town, or nodal point, intended to resist enemy forces even if nearby coastal defences had been penetrated.

The Folkestone Crestline

The hills overlooking Folkestone contained a line of defensive pillboxes. Nine Type 22 pillboxes are recorded along the crestline between Peene and the Warren, including positions around East and West Crete Roads.

Their purpose was to provide overlapping fields of fire and help prevent enemy troops from advancing through or around Folkestone.

Beach Obstacles and Roadblocks

The wider coastal defence system included anti-tank obstacles, barbed wire, prepared roadblocks, infantry positions and other measures intended to delay an invasion.

The Home Guard supported local defence, observation, patrols and the protection of important installations.

4. The Royal Military Canal

West of Folkestone, the Royal Military Canal at Hythe became part of the anti-invasion defensive network.

Originally constructed during the Napoleonic Wars, the canal provided a ready-made obstacle against the movement of enemy vehicles and troops.

During 1940, additional pillboxes and defensive positions were constructed along sections of the canal and surrounding countryside.

5. Folkestone and the Battle of Britain

The skies over Folkestone witnessed intense aerial activity during the Battle of Britain between July and October 1940.

German aircraft crossed the English Channel towards Kent, while RAF fighters operating from nearby airfields attempted to intercept them.

The Defiant Disaster – 19 July 1940

On 19 July 1940, nine Boulton Paul Defiant fighters of No. 141 Squadron encountered German Messerschmitt Bf 109 fighters near Folkestone.

Six Defiants were lost. The engagement demonstrated the vulnerability of the turret-armed Defiant against modern single-seat fighters.

RAF Hawkinge

RAF Hawkinge, situated a short distance inland from Folkestone, was an important forward fighter airfield during the Battle of Britain.

Its proximity to the French coast enabled rapid interception of enemy aircraft, but also exposed the airfield to attack.

6. Anti-Aircraft Guns and Searchlights

Folkestone's defences were designed to meet threats from both the sea and the air.

Anti-aircraft weapons, including Bofors guns, provided protection against low-flying enemy aircraft.

Searchlights, observation posts and aircraft detection systems assisted the wider air defence network.

In 1944, Kent also became a major focus of the campaign against German V-1 flying bombs launched from occupied Europe.

7. Folkestone Harbour and Dunkirk

During Operation Dynamo in May and June 1940, Folkestone Harbour helped receive Allied servicemen evacuated from Dunkirk.

Historical accounts indicate that approximately 44,000 personnel passed through Folkestone during the evacuation.

The harbour remained strategically important throughout the war for maritime and military activities.

8. Timeline of Folkestone's Wartime Defences

9. Discover the Defences at Capel Battery

Capel Battery WWII Heritage Museum preserves an important part of Folkestone's Second World War coastal defence history.

Visitors can discover the surviving gun emplacements, underground plotting facilities, wartime military equipment and the wider story of the men and women who defended the Kent coast.