General history - spoken word and sourced documents

It was recorded in the South Otago Witness newspaper (11 October 1916) that six Callahan Catlin River boys where serving king and country - Private Jas. Callahan (13th Reinforcements), Private F. H. Callahan (8th Reinforcements), Trooper Thos. Callahan (11th Reinforcements).  Trooper H. Callahan (7th Reinforcements), Trooper W.J. Callahan (1st Expeditionary Force), Private F.N. Callahan (17th Reinforcements).