"Your mate Iains makes this comment, in a sentence of its own, TWO PARAGRAPHS away from the bit about Normandy beaches:"

The only specific time period mentioned is D Day. Now who was in charge of most of europe at this period of time? On D day only a few beach heads were held by the allies. Therefore to belabour the point for absolute clarity, most of Europe was under the control of the Nazi party at this time. Why deliberately introduce red herrings? Would you like some history books? For a well educated scientist I would have thought you might have learnt a few dates and be able to join a few dots in order to link events to a logical timeframe.
Perhaps if you ask Dave the gnome nicely he will be able to educate you, he being of Polish ancestry like.

I prefer to regard my line spacings as an aid to clarity. This is to aid those such as your goodself, but in your case it is obviously a lost cause. You may call them paragraphs if you wish, some may argue the point. I care not a whit either way. It is a device largely on a par with using indents or bullet points


https://www.thesun.co.uk/news/5367307/irish-pm-leo-varadkar-infuriates-leavers-after-suggesting-he-pities-british-ww2-veterans-o