Commander
Commander is an officer in charge of a military operation or an officer of a particular rank in many countries' naval forces [Cambridge dictionary].
A commander keeps informed on the situation and goes where he can influence the action. Without undue harassment, he supervises his unit by checking its progress in accomplishing actions and orders. The military commander has complete and overall responsibility for all activities within his unit. He alone is responsible for everything his unit does or does not do. This command responsibility does not, of course, extend to criminal responsibility unless the commander knowingly participates in the criminal acts of his men or knowingly fails to intervene and prevent the criminal acts of his men when he could do so. Military commanders may also be responsible for war crimes committed by their subordinates. The commander is also responsible if he has actual knowledge, or should know, through reports received through other means, that troops or other persons subject to his control are about to commit or have committed a war crime. He fails to take the necessary and reasonable steps to ensure compliance with the law of war or to punish violators thereof [Asser.nl].
Commander. Cambridge dictionary. Retrieved from: https://dictionary.cambridge.org/dictionary/english/commander
A COMBAT COMPANY COMMANDER HAS CERTAIN UNIQUE DUTIES. Asser.nl. Retrieved from: https://www.asser.nl/upload/documents/DomCLIC/Docs/NLP/US/My_Lai_Medina_ ProsecutionBrief.pdf