He spent the next 6 months training with the 3rd Battalion until, on the 11th November 1915, he was posted to the Western Front with a reinforcement draft to the 1st Battalion, joining it wintering in the bleak trenches of the frozen mire of the Ypres salient where he was assigned to ‘D’ Company, No.14 Platoon, and where he was to have his first experiences of the line. At 7.20am on the 1st July 1916, smoke was released from the left of the Battalion position and the attacking troops formed up in no man’s land. Then at zero hour, 7.30am, the troops moved off toward their objectives. The first two of the Battalions objectives were reached with comparatively light losses, as the enemy wire had been cut sufficiently enough by the earlier artillery bombardments to cause little trouble to the attacking troops. Harold and his Wiring Party went into the assault and, at around 7.40am, whilst engaged in setting out the barbed-wire entanglement within a captured German communication trench called ‘Eck’, next to a shattered trench fortification known as ‘The Maze’, a shell exploded close by and he was struck in the head by a large fragment and killed. Harold’s body was not recovered from the field where it still lies in an unknown grave, his name is etched on to the arched gateway for the missing of the Somme at Thiepval.