19th Battalion, London Regiment (St Pancras)

The 19th Battalion, London Regiment (St Pancras) was a Volunteer unit of the British Army in existence from 1860 to 1961 under various titles. A detachment served in the Second Boer War and two full battalions fought in World War I, receiving the surrender of Jerusalem and crossing the Jordan among other exploits. During World War II the regiment operated as a searchlight unit and briefly as an infantry battalion, before becoming an anti-aircraft regiment in the postwar years.

More information on the Wikipedia page.