Reveille

n.

1.

(Mil.) The beat of drum, or bugle blast, about break of day, to give notice that it is time for the soldiers to rise, and for the sentinels to forbear challenging. For at dawning to assail ye Here no bugles sound reveille. - Sir W. Scott.

Noun	1.	reveille - (military) signal to wake up Synonyms: wake-up signal
	2.	reveille - a signal to get up in the morning; in the military it is a bugle call at sunrise

Angelus, Angelus bell, alarm, alarum, arousal, awakening, battle cry, birdcall, bugle call, call, last post, moose call, rallying cry, rebel yell, rousing, rude awakening, summons, taps, trumpet call, war cry, whistle