Enlisted at the age of 36
6th ReinforcementsTrained
Narrow Neck, AucklandTransfer to England
HMNZT 90 UlimaroaMarched in to NZ Depot, Christchurch
Reverted to Lance Corporal
Embarked for France
Reverted to Sapper at own request
Marched in to NZ Base Depot, Etaples
Joined the Company
Admitted to hospital with bronchitis
The Company was still carrying out the digging of underground premises and defences on the Front near Arras
Rejoined the Company
German Attacks
Spring Offensive
The Company was engaged in the defence of Arras by digging new trenches and dug-outs under constant enemy shellfire
Allied Attacks
Hundred Days OffensiveAdmitted to hospital with bronchitis
Embarked for England
Admitted to hospital
The Company experienced its newly reconversion in bridge construction
Classified unfit for active service
Cessation of Hostilities
Armistice
The Company continued to build bridges to reconnect a fragmented territory
Transfer to New Zealand
Troopship MaunganuiEnd of Service
DemobilizationAnthony Byledbal, “World War I Timeline of William Henry Cassidy“, New Zealand Tunnellers Website, NaN (2009), Accessed: . URL: www.
