[3][4][5] A "diminutive but nuggety" halfback, Nunn played for the Petone Rugby Club,[6] and represented Wellington at a provincial level from 1912 to 1914, and the North Island in 1914.
[1] In 1914, he was controversially omitted from the All Blacks for their tour of Australia, the stated reason being that he had been certified as unfit for military service and could therefore not be considered for selection.
[13] Nunn enlisted as a private in F Company, 28th Reinforcements, New Zealand Expeditionary Force in February 1917, but deserted from camp at Trentham in May that year.
[14] Arrested in Dunedin in April 1920, he was found guilty by a district court-martial the following month and sentenced to one year's imprisonment with hard labour.
Although Nunn had blamed his sport commitments, there were earlier indications of his pacificism as he had been previously fined for failing to attend training parades in 1913.