User blog comment:B214/Question and Answers/@comment-50.11.177.49-20130529004308/@comment-9297146-20130529070906

You may be right about him not participating in the great war I'd have to go back and reread some of the novels. Either way since Souji Okita is at least 150 years old then I'd wager he's at least 200-300 years old.