The marching band flute is also known as a fife, which is a small, high-pitched, end-blown flute. It is typically made of wood or metal and has six finger holes and one thumb hole. It is used in marching bands and military bands to provide a strong, shrill sound that can be heard over the other instruments. The fife is an important part of the marching band's sound and is often used to lead the band in marches and other pieces.