Basic Details Surname St Aubyn Forenames John Gender Male Information stated on memorial Alternative surname Sir, Baronet War Military Service Served or died Served Primary Service As stated on memorial Service (Primary - Stated) Army Unit (Primary - Stated) Duke of Cornwalls Light Infantry Sub-unit (Primary - Stated) 3rd Battalion Rank / Title (Primary - Stated) Honorary Colonel Our References Service (Primary - Our reference) British Army Unit (Primary - Our reference) Duke of Cornwall`s Light Infantry Rank / Title (Primary - Our reference) Colonel