MANUAL OF THE BUGLE.
Warning Calls.
[804.] [First call], [guard mounting], [full dress], [overcoats], [drill], [stable], [water], and [boots and saddles] precede the [assembly] by such interval as may be prescribed by the commanding officer.
[Mess], [church], and [fatigue], classed as service calls, may also be used as warning calls.
[First call] is the first signal for formation for roll call and for all ceremonies except guard mounting.
[Guard mounting] is the first signal for guard mounting.
The field music assembles at [first call] and [guard mounting].
In a mixed command, [boots and saddles] is the signal to mounted troops that their formation is to be mounted; for mounted guard mounting or mounted drill, it immediately follows the signal [guard mounting] or [drill].