"Uprising, 1944" by Norman Davies, a book about the Warsaw Uprising against the Nazis (not to be confused with the equally courageous Warsaw Ghetto Rising of 1943).
The Polish Resistance rose against their oppressors only to be betrayed by their, so-called, allies. This book has confirmed my suspicions that all statesmen who engage in geopolitics are really psychopaths who couldn't give a toss about the chaos and suffering that they cause.