Military-based musical percussion traditions were not limited exclusively to the western world. When Emir Osman I was appointed commander of the Turkish army on the Byzantine border in the late 13th century, he was symbolically installed via a handover of musical instruments by the Seldjuk sultan. In the Ottoman Empire, the size of a military band reflected the rank of its commander in chief: the largest band was reserved for the Sultan (viz. his Grand Vizier when taking the field). It included various percussion instruments, often adopted in European military music (as 'Janissary music'). The pitched bass drum is still known in some languages as the Turkish Drum.