It is written in "Koyo Gunkan" (record of the military exploits of the Takeda family, compiled by one of the Takeda vassals, and completed in 1616 by Kagenori OBATA) that both Toramasa OBU and Masakage YAMAGATA were busho who had an outstanding bravery and showed a great performance as a leader of the Takeda Family and the Takeda Army, so it can be said that their achievements raised the value of Akazonae.
飯富虎昌・山県昌景の両者は『甲陽軍艦』において武勇に秀でるとともに武田家及び武田軍の中心として活躍した武将として記されており、両名の活躍が赤備えの価値を高めたと言える。