From Wikipedia
Nafir (Arabic: نَفِير, DMG an-nafīr, also nfīr, plural anfār; Turkish: nefir) is a slender, shrill-sounding straight natural trumpet with a cylindrical tube and a conical metal bell, producing one or two notes. It was used as a military signaling instrument and as a ceremonial instrument in countries shaped by Islamic culture in North Africa, the Middle East, and South Asia. In Ottoman, Persian, and Mugulin miniatures, the nafīr is depicted in battle scenes. In Christian culture, it was displaced by or played alongside the curved tuba or horn, as seen in artwork dating to about the 14th century A.D.