Serbia annonces a general mobilization.
Russia annonces a general mobilization.
Austria-Hungary annonces a general mobilization.
France annonces a general mobilization.
Germany declares war on Russia.
Germany declares war on France.
German Army invades Belgium.
Great Britain declares war on Germany.
New Zealand declares war on Germany.
Arrival of the British expeditionary force in Boulogne-sur-Mer (France, Pas-de-Calais).
Start enlistment to form a New Zealand expeditionary force.
New Zealand Army captures German Samoa.
Battle of the Marne (France).
Departure of the expeditionary force from New Zealand.
First mining operations at Vermelles (France, Pas-de-Calais) by the French sappers.
Early French mining actions in Argonne (France, Lorraine).
John Norton-Griffiths, a Member of Parliament and civil engineer, sends an offer to create Tunnelling Companies in United Kingdom.
10 German mines of 50kg explode beneath the British trenches at Festubert (France, Pas-de-Calais).
20 German mines destroy British frontline at Cuinchy (France, Pas-de-Calais).
British Government accepts John Norton-Griffiths' offer to raise British Tunnelling Companies.
Early mining operations of the 170th Tunnelling Company at Hill 60, near Yper (Belgium).
Landing of Australia and New Zealand soldiers at Gallipoli (Turkey).
A New Zealand mine explodes at Quinn's Post which start the underground warfare at Gallipoli.
British Tunnellers of the 174th Tunnelling Company relieves French sappers at Carnoy, Fricourt, Maricourt and La Boisselle (Somme).
British Government sends an appeal to Canada, South Africa, Australia and New Zealand to raise Tunnelling Companies in the Dominions.
New Zealand is the first Dominion to announce formation of a Tunnelling Company.
Early enlistment to form the New Zealand mining corps.
Start of the New Zealand Tunnellers' training on the Avondale Racecourse, near Auckland (New Zealand).
The New Zealand Engineers Tunnelling Company leaves Auckland on board the S.S. Ruapehu.
Ruapehu call in at Montevideo (Uruguay).
End of January
Ruapehu call in at Dakar (Senegal).
Arrival of the New Zealand Engineers Tunnelling Company at Plymouth (Great Britain).
Start of the last training before departure to France.
Arrival of the New Zealand Tunnellers in Le Havre (France, Normandie) becoming the first New Zealand soldiers ont the Western Front.
The New Zealand Engineers Tunnelling Company relieves the French 7/1 compagnie d'ingénieurs territoriaux in the Labyrinth sector, between Roclincourt and Ecurie (France, Pas-de-Calais).
The New Zealand Tunnellers exchange their position with the 185th Tunnelling Company and fight henceforth at Chantecler, a kilometer South of their old sector.
First German underground offensive against the New Zealand Tunnellers.
Four New Zealand mines explode becoming the first New Zealand Tunnellers' underground action.
Explosion of four German mines near and beneath the British frontline whose three form craters on the surface.
Development of the New Zealand underground system creating an effective underground defense at Chantecler.
Exploration of the first underground quarries located in Saint-Sauveur and Ronville faubourgs in Arras.
End of the underground warfare for the New Zealand Tunnellers.
Early New Zealand connexion works in the underground quarries in Ronville (Pas-de-Calais, Arras).
Early connexion works of the men of the 184th Tunnelling Company in Saint-Sauveur (Pas-de-Calais, Arras).
43 Māoris of the Māori Pioneer Batallion reinforce the New Zealand Tunnellers.
Start putting in electricity in the quarries.
End of the connexion works in the entire underground system in Arras.
Installing direction signs in the underground system.
Early works to organize a tramway line in Ronville and Saint-Sauveur systems.
German withdrawal on the Hindenburg line making it impossible to attack from the Ronville System.
Electricity is installed and tested in the whole system beneath Arras.
Beginning of the Battle of Arras.
Opening of the three tunnels located at the end of Saint-Sauveur system allowing infantrymen to appear suddently in the German trenches.
Early development beneath trenches located between Gavrelle and Roeux, East of Arras by the New Zealand Tunnellers.
Digging dug-outs beneath British trenches by the New Zealand Tunnellers.
Explosion of a damage ammunition stock at Wanquetin by the New Zealand Tunnellers.
Continuing constructions beneath trenches by the New Zealand Tunnellers.
Large German offensive at Arras.
Start of trenching South-West of Arras for the New Zealand Tunnellers.
Back to digging underground constructions beneath trenches for the New Zealand Tunnellers.
Departure of the New Zealand Tunnellers from Arras.
Arrival of the New Zealand Tunnellers at Marieux (France, Somme).
Early digging dug-outs beneath trenches at Marieux.
End of the underground works for the New Zealand Tunnellers.
Start construction of a military bridge at Havrincourt (France, Nord).
End of the Havrincourt bridge construction becoming the longest bridge erected on the Western Front.
Erection of various military bridges.
Signing of the Armistice in the Compiègne Forest (France, Oise).
Demobilization of the first New Zealand Tunnellers.
Demobilization of the New Zealand Engineers Tunnelling Company.
Arrival of the New Zealand Tunnellers in Great Britain.
Departure of the New Zealand Engineers Tunnelling Company from Great Britain.
Arrival of the last New Zealand Tunnellers in Auckland.
Dissolution of the New Zealand Engineers Tunnelling Company.