The 3rd Battalion, Worcestershire Regiment were based in Tidworth with 7th Brigade, 3rd Division when war broke out in August 1914. They proceeded to France, landing at Rouen on the 16th of August 1914.
They saw action in The Battle of Mons and the rearguard action at Solesmes, The Battle of Le Cateau, The Battle of the Marne, The Battle of the Aisne, at La Bassee, Messines and the First Battle of Ypres. They took part in the Winter Operations of 1914-15, The First Attack on Bellewaarde and the Actions at Hooge. On the 18th of October 1915 the 3rd Worcesters transferred with 7th Brigade to 25th Division to strengthen the newly arrived Division and on the 10th of November they transferred to 74th Brigade still in 25th Division.
The 25th Division’s first action was in defence of the German attack on Vimy Ridge in May 1916. They then moved to The Somme and joined the Battle just after the main attack, with 75th Brigade making a costly attack near Thiepval on the 3rd of July.The Division was in action at The Battle of Bazentin, The Battle of Pozieres and The Battle of the Ancre Heights.
In 1917 they were in action at The Battle of Messines attacking between the Wulverghem-Messines and Wulverghem-Wytschaete roads.
In the Third battle of Ypres were in action during The Battle of Pilkem, Menin Road Ridge and at Westhoek.
In 1918 they were in action on The Somme, in the Battles of the Lys. On the 22nd of June 1918 the 3rd Worcesters transferred to 57th Brigade in 19th (Western) Division, and absorbed the 10th Battalion. They were in action in the Final Advance in Picardy and at the Armitice were were in billets near Bavay.