Bugle calls are musical signals that announce scheduled and certain non-scheduled events on an Army installation.   Scheduled calls are prescribed by the commander and normally follow the sequence shown below.  Non-scheduled calls are sounded by the direction of the commander.

DAILY SEQUENCE OF BUGLE CALLS

1.	FIRST CALL	14.	ASSEMBLY
2.	REVEILLE	15.	RECALL
3.	ASSEMBLY	16.	FIRST CALL
4.	MESS CALL (morning)	17.	GUARD MOUNTING (when scheduled)
5.	SICK CALL*	18.	ASSEMBLY
6.	DRILL CALL*	19.	ADJUTANT'S CALL (parade only)
7.	ASSEMBLY	20.	RETREAT
8.	FIRST SERGEANT'S CALL*	21.	TO THE COLOR
9.	OFFICER'S CALL*	22.	MESS CALL (evening)
10.	RECALL*	23.	TATTOO
11.	MAIL CALL	24.	CALL TO QUARTERS
12.	MESS CALL (noon)	25.	TAPS
13.	DRILL CALL*		* (OPTIONAL)

SUNDAY SEQUENCE OF BUGLE CALLS

1.	FIRST CALL	5.	FIRST CALL (retreat)
2.	REVEILLE	6.	ASSEMBLY
3.	ASSEMBLY	7.	RETREAT
4.	MESS CALL (noon)	8.	TO THE COLOR
		9.	TAPS