John James McGarvey was a son of Thomas McGarvey. He was born about 1877 in the Cookstown area. John McGarvey enlisted with the 6th Battalion of the Royal Irish Rifles in Dundalk, County Louth. He was living in Belfast at the time. Sergeant John McGarvey was serving with 6th Battalion of the Royal Irish Rifles when he was killed in action at Gallipoli near The Farm, Anzac, on Wednesday 11th August 1915.
The Anzac and Suvla cemeteries are first signposted from the left hand junction of the Eceabat- Bigali Road. From this junction travel into the main Anzac area. Follow the road to Helles, opposite the Kabatepe Museum, at 14.2 kms. take a right turn at the 'T' junction and at 14.3 kms. take the left fork. After a total of 22.8 kms, take a right turn to the memorial along a rough track 500m long. The Helles Memorial stands on the tip of the Gallipoli Peninsula. It takes the form of an obelisk over 30 metres high that can be seen by ships passing through the Dardanelles.