World War One Diary for Monday, August 19, 1918:
Western Front
Aisne: French troops capture Le Hamel.
Somme: French First Army takes over Canadian Corps line; latter transferred to British First Army (night August 19-20).
Eastern Front
USSR: People’s Commissariat for Military Affairs decreed.
Sea War
Channel: British Folkestone shore-controlled minefield sinks coastal submarine UB-109.