Back in the Second World War, men who were too young, too old, or unfit for some reason, for active service were enlisted into the Home Guard. These were intended as a first line of defence against a German invasion. Poorly equipped, poorly trained and only serving when not at work, they were more for morale purposes than for any real defence. In the 1960s and 70s there was a TV series about them:
My grandad was one of the local Home Guard guys. He is on the left:
I am pretty sure he would have done his bit if there had been an invasion, he was not one to give in easily. Unless he was hungry and cold. He did not like that. In the winter of 1940, he had a habit of going home half way through patrols for a sandwich and cup of tea. It was a really bad winter, and as far as he was concerned the Germans were not daft enough to invade in that sort of weather, Blighty was safe. Of course, he did not share this view with his comrades, who continued to freeze on the beach, waiting for an enemy that would never come. It was only at my grandfather's wake that I told one of them about this - the look on his face was a picture.