Colour sergeant is a rank in the British Army, denoting a senior non-commissioned officer responsible for the regimental colours and ordering soldiers during parades and ceremonies. Other synonyms for colour sergeant include colour, sergeant major, regimental sergeant major, sergeant, and sergeant instructor. In the United States Armed Forces, this rank is equivalent to the first sergeant, indicating a senior non-commissioned officer who has significant command and administrative responsibilities. These synonyms emphasize the important role of the colour sergeant in leading soldiers on the battlefield and representing the regiment in public ceremonies, ensuring that the traditions and values of the military are upheld.