Most afternoons, the Istanbul Military Museum sends out a band in tall caps and long kaftans to play the thundering march music that once set the pace for Ottoman armies. This is the Mehter, widely called the oldest military band tradition still performing. The museum fills the former Ottoman War Academy at Harbiye, the school where a young Mustafa Kemal Atatürk trained as a cadet. Its halls hold centuries of arms and armour, gilded campaign tents stitched for sultans on the march, and a heavy length of the iron chain said to have sealed the Golden Horn against enemy fleets.
You move from cool stone rooms of swords, shields and inlaid rifles into vast tents that open up like embroidered halls. Cannon and captured standards line the walls, and a room of ceremonial dress shows how much theatre once went into war. The band stays the reason most people come: drums, cymbals and shrill horns build a wall of sound, and every few paces the players halt and swivel rather than march straight ahead. Today the armed forces keep the collection, part arsenal, part concert.