General Ferdinand Foch c1914. Image in public domain.
- French General Ferdinand Foch becomes General in Chief of all the Allied armies in France
- The 4th Australian Brigade blocks the German offensive at Hebuterne, Denancourt, Morlancourt and Villers-Bretonneux
- New Zealand troops are deployed to the Somme to fill the gap torn in the Allied front by the German Spring Offensive. They repulse a series of German attacks and are successful in holding the line.
- American troops in France now number a quarter of a million; a further 250,000 will arrive each month until the end of the war
