sentences:  He played a key role in the Battle of Jarama, one of the principal military actions of the Spanish Civil War.Jock Cunningham was born along with his twin brother Thomas Michael Cunningham on 20 December 1902 at 17 Balgray Road, Glasgow, to John Cunningham, a Stationary Engine Keeper, and Mary (Annati) Cunningham, who married in 1890 in Malta.He was one of a family of twenty-two with military tradition.