The slide trumpet is an early type of trumpet fitted with a movable section of telescopic tubing, similar to the slide of a trombone.
There are several types of slide trumpet of different places and eras.
The slide trumpet grew out of the war trumpet as used and developed in Western and Central Europe: Don Smithers argues that the slide grew out of the detachable leadpipe, and separated the use of the trumpet as a dance instrument from the trumpet as a signaling device in war.
[1] As no instruments from this period are known to have survived, the details—and even the existence—of a Renaissance slide trumpet is a matter of some conjecture, and there continues to be some debate among scholars.
[2] Some slide trumpet designs saw use in England in the 18th century.