The Military Band is now often called a Marching Band, because it is formed of instruments that can be played whilst being carried on the march.

The photo shows the Royal Australian Air Force Band on the march. Military bands such as this one have a very high standard of musicianship, and they are not limited to playing marches. They have a versatile repertoire ranging from arrangements of romantic orchestral compositions, to big band arrangements of show tunes and popular songs. 

Bugles or cornets are generally used instead of trumpets. The other brass instruments (trombones and French Horns) are augmented by woodwinds, namely flutes, clarinets, and all types of saxophones, but excluding oboes, which cannot compete in loudness with the brass. The clarinets often play the parts assigned to violins in orchestral music. The marching percussion section includes side-drums, a big base drum, and cymbals.