Battery
The battery is the drum section that marches on the field as a group. The battery usually consists of snare drums, bass drums, tenor drums, and cymbals. In the past, marching timpani were common before the adoption of the front ensemble, as were marching keyboard percussion instruments such as glockenspiels and xylophones. A relatively small number of bands, mostly at the college level, continue to field such traditional marching keyboard instruments; however, most bands have phased out their use. Marching steel pans are rarely part of drumlines due to issues with volume and durability. In modern marching band and drum corps- snares, tenors, bass drums, and sometimes cymbals march on the field and are generally referred to as the battery, while the pit (or front ensemble) is stationary in the front of the field. In other cases, marching units may place the pit in the back or behind the band because the band may be too small for them to station the pit in the front. Sometimes, the front ensemble may have a certain position on the field in order to create a desired visual effect.
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