The best recount of the events leading to the battle of Pelusium is from Greek historians, particularly Herodotus. According to Herodotus the conflict between the Pharaoh Amasis II of Egypt, and Cambyses II of Persia was a gradual process involving multiple personalities mostly Egyptians. According to Herodotus an Egyptian physician was requested by Cambyses II from Amasis II on good terms, to which Amasis II complied. The physician (most likely an ancient ophthalmologist) resented the forced labor that Amasis had imposed on him, and in retaliation, persuaded Cambyses II to ask of Amasis II a daughter in marriage, knowing how Amaris would dislike losing his daughter to a Persian. Cambyses II complied requesting the hand of the daughter of Amasis in marriage. Amasis, unable to let go of his