Battle patches of the 165th Brigade, 55th (West Lancashire) Division in the First World War, 1917 onward, (l-r, t-b) 1/5th, 1/6th, 1/7th, 1/9th King's (Liverpool) Regiment, 165th Machine Gun Company (a simplified crossed machine guns of the Machine Gun Corps badge), 165th Trench Mortar Battery (a stylised trench mortar bomb).
Coop, J. O. (1919)       The Story of the 55th (West Lancashire) Division, Liverpool:  Liverpool Daily Post Retrieved on 3 September 2019.
Original: British Army Vector:  Usedtoknowthat