"Ceddin Deden" is a famous early 20th-century Ottoman military march composed by Muallim İsmail Hakkı Bey in 1917 to boost army morale, featuring powerful lyrics about Turkish heritage and the Hüseyni makam style. The song is a staple of the Mehteran tradition, which is recognized as the world's oldest military band, known for using loud instruments like the kös for psychological impact. You can find the full lyrics and a translation, showcasing themes of ancestral pride and victory, at sites like Musixmatch and YouTube .