- War Chest Button Day. The Orange Red Cross sells buttons to raise funds to help soldiers on the front line
- French troops repulse a German attack on Hill 304 at Verdun and take the German first and second line trenches at Tahure in Champagne
- Self-styled ambassador of the Irish nation and organiser of the Easter Rising, Sir Roger Casement, is found guilty of high treason and is sentenced to death. He is sentenced to hang at Pentonville Prison on August 3, 1916. The Trial of Sir Roger Casement
