In military science of Uesugi-ryu school, this shooting method, dividing the labor into shooters and assistants is said to have been called the way of Karasu-watashi (crow handing) and in future generations, in the Kishu Tokugawa family, the job title of kusurikomeyaku (a gunpowder charger), the predecessor of Oniwaban (the shogunate's guard of the inner garden), retains a trace of it.
この射撃手・助手を分業する射撃運用法を烏渡しの法と上杉流軍学では称したと伝えられ、また後世紀州徳川家においては薬込役という、御庭番の前身である職名にその痕跡を残している。