Mehter Drums is a level 1 Imperial Council bonus in Age of Empires IV available to the Ottomans. Once unlocked, a Mehter spawns at the player's Landmark Town Center. Furthermore, Mehters gain the Mehter Speed Bonus enhancement:
Mehter Speed Bonus (Passive): Increase the movement speed of other units in the same formation by 15%. Unlike most other abilities, this ability does not apply to nearby units within a specific radius, but rather units that that are in the same formation. Units can form formations either by clicking one of the three default formations (line, staggered, or wedge) or by issuing a group move command, as long as they are close enough together. If a unit is too far from the formation, it will not gain the move speed bonus until it catches up to the group, even if tasked to perform the same action. Units gain the speed boost 4 seconds after entering the formation, and maintain the bonus, even while stationary, until 5 seconds after either they or the Mehter are issued a separate command to remove them from the formation.
Since the Mehter is always in formation with itself, it gains +15% speed always.
