In WW1 Harvey was in the 1/22nd (County of London) Battalion, The London Regiment (The Queen's). On 2 September 1918 north of Peronne, France, when the advance of his company was held up by machine gun fire, Private Harvey dashed forward a distance of 50 yards alone, through the English barrage and in the face of heavy enemy fire. He rushed a machine gun post, shooting two of the team and bayoneting another. He then destroyed the gun and continued his way along the enemy trench. He single-handedly rushed an enemy dugout which contained 37 Germans and compelled them to surrender. These acts of gallantry saved the company heavy casualties and materially assisted in the success of the operation. He was awarded the Victoria Cross for these actions.
Harvey later achieved the rank of sergeant.
