'Operation: British front in the vicity of Foret de Mormal - 5th November 1918. For consicuous gallantry and devotion to duty. During the above operations Corporal Cusack was in command of a Lewis Gun section, and when his Company was held up by machine gun fire he pushed his gun forward on the flank, silencing the enemy machine guns. He then rushed and captured two machine guns. By his own bravery and disregard for his personal safety he set a magnificent example to all ranks.'
Source: 'London Gazette'
Date: 17 June 1919

Regimental number	30912
Occupation	Blacksmith
Next of kin	Mother, Mrs J Cusack, Tadmor, Nelson
Rank on embarkation	Rifleman
Unit name	New Zealand Expeditionary Force, 20th Reinforcements (2nd Draft), New Zealand Rifle Brigade Details, G Company
Embarkation details	Unit embarked from Wellington on board HMNZT Athenic on 30 December 1916
Final rank	Sergeant
Final unit	12th Nelson Company, 1st Battalion, Canterbury Infantry Regiment
Fate	Commenced return to New Zealand 12 April 1919
Medals	Military Medal 'Operation: British front in the vicity of Foret de Mormal - 5th November 1918. For consicuous gallantry and devotion to duty. During the above operations Corporal Cusack was in command of a Lewis Gun section, and when his Company was held up by machine gun fire he pushed his gun forward on the flank, silencing the enemy machine guns. He then rushed and captured two machine guns. By his own bravery and disregard for his personal safety he set a magnificent example to all ranks.' Source: 'London Gazette' Date: 17 June 1919
Other details	War service: Western Front Medals: Military Medal, British War Medal, Victory Medal
Sources	Nominal Roll Vol. 2: Roll 49, p. 13