One my grandpa was killed on the last day of the Siege of Warsaw in 1939. He was the commander of an AA gun on the Polish side.

The other grandpa was a Polish infantry officer and he was hiding 1939-1945 in the hills along with his son (my uncle) fighting the Germans guerilla way.

His other son, my father, was too young for that thus he stayed in Warsaw and... was educated by the Germans to be a very good engineer.

In fact, we are (partially) of German descent...