Rank: Lieutenant
This Boer-War Soldier record for Arthur EB (Hon) O NEILL was transcribed record from various documents held at the National Archives, South Africa. Data contained in this set is known as "The Soldiers of the Queen".
https://www.gendatabase.com/boer-war-soldiers-record.php?q=197891&r=Arthur EB (Hon)&s=O NEILL&ref=