Rank: Sqn. QM Sergeant
This Boer-War Soldier record for Arthur MORTIMER-THATCHER 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=178685&r=Arthur&s=MORTIMER-THATCHER&ref=