“ In the military sense, “marching” is walking in formed bodies of troops, either during drill evolutions on parade or on the “line of march” from one place to another. In both senses the word is used with mounted troops as well as with dismounted men. ”

“ The paces recognized for cavalry are the walk, the trot, the canter and the gallop; the usual practice on the line of march being to alternate the walk and the trot, which combination gives a speed of about 5 miles an hour for many hours together. A “day’s march,” or more simply a “march,” is usually reckoned to be 15–16 miles for a large body of troops, a “forced” march being one of 20 miles or over, or one in which, from whatever cause, the troops are on foot for more than about seven hours. For large bodies of troops the rate of movement on the line of march rarely exceeds 3 miles an hour. ”

“ The importance of music on the march is attested further by the almost universal practice of singing or whistling marching songs, and even playing them on concertinas, &c., in the absence of the band and drums. ”