A is the answer to this question....
they are 69 years old. 2019-1950 is 69
I believe that it would be the last one because when world war 2 broke out the Germans invaded Poland and took over the land and then they expanded to France and they were cut off there by the English Channel. At this time they were hoping to have a "blitzkreg" (lightning war.) I'm hoping that this helped as much as possible. If not just ask me more about it.