>> guest: joseph lozito said judge advocate general. people remember him today, they particularly remember to ask who was after lincoln's assassination responsible for prosecuting the conspirators who had worked with john wilkes booth. however, he is a much larger figure than that. he was 67 years old by the time he got to washington by the time he became licensed judge advocate general he had a very long life and lived on until 1894. he's a much bigger figure than not. do we know him best as for his years as lincoln judge at the good general. >> host: you titled this "lincoln's forgotten ally." what you choose this is a title? >> guest: because of his importance to lincolns. because of the steep devotion to lincoln and his policies and therefore he is lincolns ally. but he is someone whom we simply doubt remember and historical records except in terms of a tiny slice of what roles he played over the course of his life. as a professional. certainly one of the most important members of lincolns administration. and yet he has dropped off