User blog comment:Godisme/Everything But The Rain/@comment-5745799-20130227233323/@comment-4207271-20130228052003

I'm just going out on a limb here, but 10th Division would make more sense in the story, as the Captain before Toshiro is Unknown, and Isshin was a captain when he met Masaki, which could not have been more than 20 years ago.