The battalion, with the 11th Royal Fusiliers on its right, led the left of the attack by the 18th Division. They advanced at 7.30 am and within 15 minutes had captured the first line system of German defences, a place called Emden Trench. By the time the objective had been reached every officer in the two leading platoons had fallen but the men pressed on, led by NCOs. The Germans were well protected in their dugouts and put up a fierce resistance. The assaulting battalions carried forward their attack supported by machine-guns and trench mortars which, according to the Divisional history, provided a hurricane bombardment. Eventually, at 9.30am, after an intensely bitter fight the Battalion took their final objectives, the Pommiers Trench & Redoubt, which were filled with German dead. The Battalion had suffered some 321 casualties during the assault. Henry has no known grave and his name is recorded on the Thiepval Memorial, Somme, France.