Noun
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.
Source: Webster's dictionaryAfter a 6 a.m. reveille, the bands spend most of the day marching. Source: Internet
Following the silence reveille was sounded while Jack Bricknell raised the Australian flag and Chanelle Tallon raised the New Zealand flag. Source: Internet