Just to add my bit!
My grandfather was one of the first to volunteer when WW2 broke out and went into the BEF. They were hopelessly undermanned and ill-equipped, originally sent out with one rifle between two men. He never spoke about what happened to him, all we knew is that he was hospitalised and suffered fits as a result of what happened. He has now passed away about 10 years ago and I have been trying to find out what he went through. The only thing I can say with some degree of certainty is that he was part of the BEF, either in the Oxon Bucks or RE. He was evacuated before Dunkirk so presumably was one of the first to encounter the German blitzkrieg as it swept through Northern France. A terrifying encounter, Im sure. I know more about his father and brothers as they died in WW1 than I do about him and what he experienced. My grandfathers twin brother who lived in Canada and passed away the other week only said of it " I had a better war than your grandfather ever did". He went to Railway at War weekend near Northampton and had a great day out, even having a jive, which is not bad when you are 80+ ..!