John H,
England did stand alone in the very early going during WWII. And did a bang up job against the Nazis, given her limitations in a/c, men, and industrial base.
However, through lend lease, the US provided invaluable help to England (and ultimately, all of Europe) by supplying equipment, aircraft, manpower, etc., even though our country wasn't yet officially in the war. How many Americans, Canadians, and Aussies flew with the RAF in those dark days, because they recognized the threat from Germany, and wanted to do their part in the effort?
And don't forget, it's still debated to this day why Hitler didn't proceed with the invasion of England, and instead turned his attention to the east, and Russia. Germany would have crushed the UK if they had proceeded according to their original plan, and not opened another front by launching Barbarossa.
Don't minimize the US contribution to your freedom today. No doubt in my mind that Europe WOULD be speaking German today, if it weren't for the help of the US.
Your dad was a hero, and you should be very proud of him and his ultimate sacrifice in helping to secure YOUR freedom
What do think he would say about you viewpoints today, regarding the neccessity of war, and all that goes with it?
Best regards.