'On the evening of 11th September 1918 the Battery position near Metz was heavily shelled, three being killed, two wounded and a quantity of ammunition set on fire with the first few rounds. Immediately and with utter disregard of personal danger 2nd Lieutenant Greig went into the position to see if there was any hope for the men who were thought to be dead. The position was still being heavily shelled and the mmunition exploding but 2nd Lieutenant Greig remained there and supervised and helped in the extinguishing of the flames. The men, many of whom had been blown up, were considerably shaken but the bravery and coolness shown by this officer was a splendid example and did much to steady everyone.'
Awarded, and promulgated, 'London Gazette', 31 December 1918.

Regimental number	9/492
Address	Oturehua
Marital status	Single
Next of kin	Mother, Mrs D A Greig, c/o Mitchell's Station, Wairoa, Hawke's Bay
Rank on embarkation	Sergeant
Enlistment status	Volunteer
Unit name	New Zealand Expeditionary Force, Main Body, Otago Mounted Rifles Regiment
Embarkation details	Unit embarked from Wellington on 16 October 1914
	Three squadrons of the Otago Mounted Rifles Regiment left New Zealand on board 'Hawke's Bay', and one squadron on board 'Verdala'. From the Nominal Roll it is not possible to determine on which ship an individual embarked.
Final rank	2nd Lieutenant
Final unit	3rd Battery, 1st Brigade, New Zealand Field Artillery
Recommendations (Medals and Awards)	Mention in Despatches 'On the evening of 11th September 1918 the Battery position near Metz was heavily shelled, three being killed, two wounded and a quantity of ammunition set on fire with the first few rounds. Immediately and with utter disregard of personal danger 2nd Lieutenant Greig went into the position to see if there was any hope for the men who were thought to be dead. The position was still being heavily shelled and the mmunition exploding but 2nd Lieutenant Greig remained there and supervised and helped in the extinguishing of the flames. The men, many of whom had been blown up, were considerably shaken but the bravery and coolness shown by this officer was a splendid example and did much to steady everyone.' Awarded, and promulgated, 'London Gazette', 31 December 1918.
Other details	Medals: 1914-15 Star, British War Medal, Victory Medal
Miscellaneous details	Nominal Roll Vol. 1: Otago Mounted Rifles/Main Body