The oldest Military Marching Band in the world

Turkish Ottoman military band "Mehter"
Turkish Ottoman military bands are the oldest variety of military marching band in the world. Turkic armies were the first military troops that were marching with the bands in the history. In modern Turkish, the band as a whole is often termed "Mehter Bölüğü" (mehter troop) or "Mehter Takımı" (mehter platoon) or "Mehteran". These military marching bands were used for spreading fear to the enemy and for encouraging Turkish soldiers.
It is believed that individual instrumentalists may have been mentioned in the 8th century Orkhon inscriptions (Turkic Khanate). Such military bands as the mehters, however, were not definitively mentioned until the 13th century. It is believed that the first "mehter" was sent to Osman I (Turkish Ottoman Empire) by the Seljuk Sultan Alaeddin Keykubad III (Turkish Seljuk Empire) as a present along with a letter that salutes the newly formed state.

The notion of a military marching band, such as those in use even today, began to be borrowed from the Ottoman Empire in the 16th century. The sound associated with the Mehterân also exercised an influence on European classical music, with composers such as Joseph Haydn, Wolfgang Amadeus Mozart, and Ludwig van Beethoven all writing compositions inspired by or designed to imitate the music of the Mehters.
Today, the music of the Mehters is largely ceremonial and considered by many Turks as a stirring example of heroism and a reminder of Turkic nation's historical past. Today, it is the band of the Turkish Armed Forces and it performs at the Military Museum in Istanbul.

Mehter Military Band consists of Guards and Musicians. The band commander is "Subaşı" (Captain). The Guards are Ottoman elite troops: Janissaries and Armoured Infantries. Janissaries carry Turkic and Islamic Flags and standard bearers (Sancak and Tuğ). The standard instruments employed by a Mehterân are the kös (a giant timpani), the nakare (a small kettledrum), the davul (a bass drum), the zil (cymbals), the kaba zurna (a bass variety of the zurna), the boru (a kind of trumpet), and the cevgen (a kind of stick bearing small concealed bells).