Per his military service record (regimental no. N21449), Tyson Ryan was born in Gilgandra, N.S.W. He gave his age as 18 years and 6 months, his marital status as single, and his occupation as horse trainer. His description on his Certificate of Medical Examination form was 5 feet 8 inches tall, weight 9 stone 3 lbs., with a dark complexion, blue eyes, and black hair. His religious denomination was recorded as being Roman Catholic. He claimed that he had no previous military experience.
His next of kin was recorded on his Australian Imperial Force Attestation Paper of Persons Enlisted for Service Abroad form as his father, Michael Ryan, Dubbo Road, Gilgandra. Both his parents (Michael and Mary Ann Ryan) signed their names giving their consent for their son to enlist on his initial Application to Enlist in the Australian Imperial Force form.
He completed his medical examination at Gilgandra on 29th October 1915 (19 days after the start of the Coo-ee March).
He caught up with the Coo-ees, and was attested by Captain A. C. Eade at Lawson on 7th November 1915 (the day the Coo-ees rested at Lawson).
After completing the Coo-ee March he went to Liverpool Camp as reinforcement for the 6th Australian Light Horse Regiment.
Trooper Ryan forfeited 10 days pay for being absent without leave on 10th and 11th January 1916.
On 14th January 1916 Trooper Ryan was fined £10 for assaulting police during a riot.
He was fined 1 shilling, and confined to barracks for 7 days, for being absent without leave on 13th March 1916.
He was fined 1 shilling for neglect of duty and being late on 6 am parade on 6th May 1916.
On 15th May 1916 Trooper Ryan was fined £1 at Menangle Park for using threatening language to an N.C.O.
On the 19th of May 1916 Trooper Ryan was discharged unlikely to become an efficient soldier.
He attempted to re-enlist in 1917, however he was rejected as medically unfit.
 NAA: B2455, RYAN TYSON