The invasion of England | The final defence

Winston Churchill was so concerned about an invasion of England by the German armed forces that a network of fortifications transformed southern England into a prepared battlefield. Out of an estimated 28,000 fortifications and brick or concrete pillboxes constructed up to 1940, it is estimated only 6,000 odd remain today.

These pillboxes were the most visible part of England’s defence known as the GHQ line.

The French Resistance during world war II is well known organisation. What is less well known is England’s last defence was a formation of Auxiliary Units, a special ops branch of the Home Guard that would form the heart of England’s Resistance. These units needed to be set up and equipped before we were over run.

With no interest in the Royal Wedding over the bank holiday we decided to go out for a walk in 100 Acre Wood in Wivelsfield Sussex and see if we could find the remains of The Ditchling Patrol’s Operational Base. This was their hideout and operation base, where England would have operated her last gasp of fight to an invading Nazi army.

Had Germany forces invaded England and been successful, this isĀ  one of a handful of places that England would have been fighting from. How the hide out looks today.

Image of remains of Ditchling Auxiliary Hideout

After 70 years of decay the remains of Ditchling Auxiliary Hideout 2011

In its day the brick entrance shaft would have been below the surface level hidden under a trap door. According to the Sub Brit site, link below, the trap door was counter weighted with a lock mechanisim such that trying to lift the hatch would not work. There was a hidden wire elsewhere that when pulled, caused the trap door to pop up assisted by the counter weights. Clever eh??

Image of the mouth of the Escape Tunnel Ditchling Auxiliary Unit Hide out

The mouth of the Escape Tunnel Ditchling Auxiliary Unit Hide out

The exit of the escape tunnel emerges on the side of a steep hill. I’m not knowledgeable about trees, however, it struck me that there was little cover to make an escape into the woods from this point even after 70 years of growth, without being seen fairly quickly by someone stood at the entrance to the hide out.

It would however have been a vantage point to mount a surprise counter attack on the entrance to the hideout. Having killed the attackers there would have been time to melt into the woods and make your escape.

More information

Subterranea Britannica Ditching Auxiliary Unit

Wikipedia Auxiliary Units during World War II


Its easy to be lulled into thinking the Auxiliary Units were disbanded after the threat of invasion had passed. The Auxiliary units were disbanded around 1944, however the idea wasn’t. The idea was morphed into another organisation and they remain today with many European countries now having set up their own.

They are now known under the generic names of Operation Gladio or Stay behind forces.

A surviving Auxiliary Unit Bunker

An intact surviving Auxiliary Unit Bunker filmed in in May 2019.

The Sub Exploration team make the intrepid journey to record how this un-named bunker has survived in remarkably good condition. Still standing the Sub Exploration teams descent into the bunker give a much clearer insight than the collapsed remains of the Sussex one that’s local to me and described here.

YouTube Preview Image

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.