Enlisted at the age of 41
Main BodyTrained
Avondale, AucklandPromoted Sergeant
Transfer to England
Steamship RuapehuMarched in to the Company Training Camp, Falmouth
Embarked for France
The Company joined the underground warfare in the North of France
Granted leave to France
Rejoined the Company
The Company began the operations to connect old underground quarries in Arras in order to accommodate thousands of soldiers for an upcoming battle
Nominated for an Imperial Commission
Embarked for England
Detached to No.5 Officers Cadet Battalion, Cambridge
Marched in to NZ Depot, Boscombe
Detached to Royal Engineers Officers Cadet Company, Chatham
British Offensive
Battle of ArrasThe Company was employed to rebuild a major road leading to the Front during the battle
The Company moved to Monchy, ten kilometres east of Arras, to work on the fortification of the new front line
Detached to No.4 Officers Cadet Battalion, Oxford
Transferred
Wellington RegimentPromoted 2nd Lieutenant
Anthony Byledbal, “World War I Timeline of Denis Quinlan O'Brien“, New Zealand Tunnellers Website, NaN (2009), Accessed: . URL: www.