When I was a child, he told me a lot of stories about what happened in the war, about things that happened to my mother's family and his family and to Poland. One of the stories that he came back to repeatedly was about what happened in the Katyn Forest near the Russian town of Smolensk in 1940.
He told me about how the Soviets took 15,000-20,000 Polish Army officers and killed them. Nobody knows the number for certain.
These soldiers were mainly reservists; that means they weren't professional soldiers, just civilian soldiers. In their daily lives, they were doctors and lawyers, teachers and priests. My father used to say that they were the future of Poland. He said that the Soviets didn't want Poland to have a future, so they took these doctors and lawyers, scientists and librarians and tied them up and blindfolded them and shot them in the back of the head. They were buried in mass graves.
There are no Great Walls there,
Through the coolness of the day,
And soon not even the names