British cavalry beside the Ctesiphon Arch during the advance on Baghdad in March 1917, Brigadier HB Latham. Image courtesy Imperial War Museum © The Rights Holder (Q 70528).
- The British cavalry in Mesopotamia advances to within 22 kilometres of Baghdad
- Allied forces on the Western Front extend their front south of Somme to Reims, twice the length that it was a year ago
- Allied troops on the Eastern Front launch a night attack on German positions south of Brzezany; the attack fails
