A watchman; a scout, spy. Obsolete. A military watchman, sentinel, or look-out; also a scout, spy; esp. a watchman in a camp, castle, or fortified…

One who sounds or plays upon a trumpet; spec. a soldier in a cavalry regiment who gives signals with a trumpet; also, one who has a similar function…

Chiefly Military. A person who plays a drum or drums; a drummer.

Originally: a non-commissioned officer having command of the drummers of a regiment; (also) †the first or chief drummer in a regiment or other body…

= trumpeter, n.

(in the British army) a staff officer having overall charge of the provision and organization of drummers.

A person who plays a bugle; spec. a soldier who conveys signals or commands using a bugle.

a non-commissioned officer who superintends the fifers of a regiment.

the leader of a pipe band, or the NCO commanding a regimental pipe band.

the chief bugler in a regiment.

A person who makes, operates, or uses signals, esp. in the army or navy, or on a railway.

a boy who plays a bugle, esp. in a military regiment (see note at bugler, n. 1).

the chief trumpeter of a band or regiment.

a military bugler; (later also more generally) a man who plays a bugle.

attributive bunting-tosser n. Naval slang a signaller.

Hence (Services' slang), a signaller.

U.S. Military. In the U.S. Marines: a soldier responsible for sounding signals on a musical instrument; (now) spec. a trumpeter, a bugler.