World War Secrets: Hidden Trenches in Britain that Churchill prepared to confront the Nazis

The auxiliary units, or "Churchill's Secret Army", were a team of volunteers modeled on the British Internal Guard, tasked with carrying out a "last" defense of Britain in the event that Nazi Germany landed on the shores of the United Kingdom.

However, unlike the Inner Guard, this secret group was a guerrilla brigade shrouded in secrecy, demanding to wreak havoc behind enemy lines.

Each unit, which includes about eight men, relied in its operations on hundreds of small concrete trenches buried throughout the British countryside.

For years, these men's activities have been the subject of speculation, their rules of operations and activities shrouded in mystery, with no official acknowledgment of their wartime activities.

But a new scientific investigation, published in the Journal of Conflict Archeology, sheds light on the underground combat group.

Records indicate that the patrols consisted of four to eight civilians with local knowledge - farmers, landowners in, guards, and even illegal poachers.

After training at Colchill House, the men went to operate from underground operating bases, located in remote locations, to avoid detection.

Some limited investigations were carried out in two bases, and escape holes were discovered, designated rooms and artefacts that included heating stoves, lighting and cooking utensils - all evidence of long-term planning.

The experts indicated that this is the first study of its kind that proves the activities of this secret force.

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