AR 600-25 governs Army policies and procedures for salutes, honors, ceremonies, customs, and visits of courtesy.
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AR 600-25 covers hand and cannon salutes, national flag and anthem courtesies, reveille and retreat, ceremonies, parades, courtesy visits, and funerals. It establishes requirements and exceptions for saluting, flag display, cannon salutes, and ceremonial precedence.
All Army personnel in uniform are required to salute when they meet and recognize persons entitled to the salute. (paragraph 2-1)
Personnel will not salute indoors, except when reporting to a superior officer. (paragraph 2-1)
Salutes will not be fired between retreat and reveille, on Sundays, or on national holidays (excluding Memorial Day and Independence Day) unless, at the discretion of the commander directing the honors, international courtesy, or the occasion requires an exception. (paragraph 2-3)
The salute to the Union consists of one gun for each State. (paragraph 2-3)
At every installation garrisoned by Soldiers other than caretaking detachments, the flag will be hoisted at the sound of the first note of reveille. (paragraph 4-1)