] The Poles withstood almost six years of German occupation
] during which time they were continuously subjected to
] arrest, torture, imprisonment or execution. Many were
] sent to concentration camps where they died a slow death.
] Hundreds of thousands were rounded up and deported to
] Germany for use as slave labour

This page has documentation of specific murders and abuses by the Germans during WWII. It includes details of the deaths of some members of my own blood family, the Taczanowski's (my father's cousins, via his paternal grandmother).

] PART ONE: Persecutions, Murders, Expulsions
]
] Chapter One: The Deliberate Murder of the Civil
] Population During the Military Operations

I am not meme-ing the exact references, because the descriptions are extremely graphic.

This link is not for the squeamish. :/

Documentation of German Atrocities in Poland During WWII