The Home Guard was largely made up of men past the age of conscription, but also younger men who were not able to join the armed forces for some reason. Some, like me, were in Reserved Occupations, which were jobs the Government felt were too vital to pass on to unskilled men.
It was our job to defend Great Britain should the unthinkable happen: our country being invaded by an enemy army. We also had to be on the look-out for spies or anything else that didn't look quite right. You may remember the poster that said "careless talk costs lives" and we took this very seriously. You never knew who might be listening or what they might be able to do with a snippet of information they overheard.
Another part of our job was to keep a close watch when German planes were flying over our area.