Adjutant (military), an officer attached to each regiment of horse or foot whose special duty is to assist the commander. An adjutant is never above the rank of major, and generally serves for four years. He has the task of communicating the orders of his commander to the different subordinates. The Adjutant-General is a high official whose duties towards the whole army are similar to those of an ordinary adjutant to his regiment. His duties include the carrying out of all orders relating to the equipment, instruction, recruiting, and efficiency of troops, and he is the medium for all reports.