WW2 War Diary for Wednesday, September 13, 1939:
German infantry cross river Vistula, South of Warsaw.
German High Command announces its intention to crush guerrilla operations and sabotage by Polish civil population with indiscriminate bombing and shelling of towns.
Heavy air raids on Warsaw.
French cruiser La Tour d’Auvergne sunk by accidental explosion at Casablanca.
France: War Cabinet formed with new ministries of Armaments and Blockade.