Reading Chamberlain (he wrote two sets of memoirs), his final accounts were not the tall tales of an old man but the deliberate journalistic liberties of a rank opportunist (Hearst). The only real detractor who was contemporary was a Private Gerrish of the 20th. However, the private seems to have been in hospital at the time of LRT. JLC lived out a long life in Brunswick and Augusta, Maine. One of his associates in Augusta was Selden Conner who headed the pension office and was very active in veterans' organizations (also a Civil War general and also a governor of Maine); Maine vets took war service very seriously and General Conner would have raised all sorts of flags if he spotted inaccurate embellishment.I used to be a lot more critical of Chamberlain and his accounts but I've mellowed some in recent years. Who doesn't love an old man spinning yarns even if they aren't entirely accurate? I think we've all met that person and Chamberlain was just as human as any of them. That said, as a general rule of thumb, take accounts from decades after said event with a grain of salt without more contemporary corroboration.