|Place of birth||Brisbane, Queensland|
|Address||Auckland Villa, Tank Street, Brisbane, Queensland|
|Age at embarkation||23|
|Next of kin||Father, James Gavin, Crows Nest, Queensland|
|Previous military service||Nil|
|Rank on enlistment||Private|
|Unit name||5th Light Horse Regiment, 16th Reinforcement|
|AWM Embarkation Roll number||10/10/4|
|Embarkation details||Unit embarked from Sydney, New South Wales, on board HMAT A47 Mashobra on
|Rank from Nominal Roll||Gunner|
|Unit from Nominal Roll||1st Field Artillery Brigade|
|Fate||Returned to Australia
|Family/military connections||Brothers: 1566 Pte George GAVIN, 5th Light Horse Regiment, returned to Australia, 1 January 1919; 482 Lance Corporal James GAVIN, 31st Bn, killed in action, 19 July 1916; 3261 Pte Patrick Joseph GAVIN, 5th Light Horse Regiment, returned to Australia, 28 June 1919; 3262 Pte Stephen GAVIN, Australian Mounted Division Train, returned to Australia, 10 July 1919.|
War service: Egypt, Western Front
Transferred to Artillery Details, Tel el Kebir, 25 May 1916.
Embarked Alexandria, 28 May 1916; disembarked Plymouth, England, 12 June 1916.
Transferred to Anzac Provost Corps, Tidworth, 1 January 1917.
Appointed Lance Corporal, 30 June 1917; Acting Corporal, 30 June 1917.
Transferred to Field Artillery Details, 29 August 1917, and marched into Reserve Brigade Australian Artillery, Larkhill.
Married Edith Ethel PLANK, spinster, aged 21, at Shipton Bellinger Parish Church, Hampshire, 20 September 1917.
Admitted to Military Hospital, Fargo, 4 October 1917 (appendicitis); discharged to Training Depot, 29 November 1917; marched into RBAA, Heytesbury, 30 November 1917.
Proceeded overseas to France, 16 January 1918; taken on stregth, 1st Field Artillery Brigade, in the field, 23 January 1918.
Admitted to 3rd Australian Field Ambulance, 15 October 1918 (influenza); transferred to 3rd Australian General Hospital, Abbeville, 17 October 1918; to Ambulance Train No 34, 3 November 1918 (broncho-pneumonia); transferred to England, 3 November 1918, and admitted to 1st Birmingham War Hospital, 4 November 1918; discharged on furlough, 3 December 1918, to report to No 4 Command Depot, 17 December 1918.
Commenced return to Australia on board HT 'City of York', 14 January 1919; arrived Melbourne, 27 February 1919, for onward travel to Brisbane; discharged (medically unfit), Brisbane, 22 April 1919.Medals: British War Medal, Victory Medal
|Sources||NAA: B2455, GAVIN John Joseph|