Although the processes of the battles remain unknown, the descriptions of the battles themselves seem to have been based on the records written by military commissioners to report the grant of honors or distribution of rewards according to the merits, and also on the records of the letters on details of exploits of wars (or distinguished services).
合戦に致る過程についてはともかく、合戦そのものについては、当時の軍奉行がまとめた論功行賞のための合戦記、勲功次第注文などの記録が元になっていると思われる。