- Orange-born brothers Alexander Tinnock Whiteley, Charles Henry Whiteley and Richard James Whiteley travel from their home in Narromine to Dubbo to enlist. Richard is commemorated on the Centenary of WWI in Orange Honour Roll; he would be killed in action in France on 3 May 1917. Alexander and Charles would survive the war, returning to Australia in 1917 and 1918 respectively.
- Italians retreat between Astico and Brenta and in Sugana Valley in the Trentino offensive
- Ali Dinar, Sultan of Darfur flees the capital, El Fasher, taking refuge in the Jebel Marra mountains 80 km to the south-west. Allied forces occupy El Fasher.
23 May 1916
