Born in Missouri in 1901 and raised in Oklahoma, Buckles visited a string of military recruiters after the United States entered the ‘war to end all wars’ in April 1917.
He was repeatedly rejected before convincing an Army captain he was 18. He was only 16 and a half at the time.
He said: ‘A boy of (that age), he’s not afraid of anything. He wants to get in there.’