Final answer:
The origin of the bugle call is military history where they were used to communicate signals such as waking troops, signaling the day's end, and paying respects at funerals. 'Reveille' signals the start of the day, 'Retreat' the end, and 'Taps' is played at funerals and flag ceremonies.
Step-by-step explanation:
The origin of the bugle call, including well-known calls such as "Reveille," "Retreat," and "Taps," is rooted in military history. These calls were traditionally used to communicate various signals to troops in camp and on the battlefield before the invention of radios. The calls served practical purposes such as waking the troops, signaling the end of the day, and paying final respects at military funerals.
For example, "Reveille" is a signal to arise and start the day, while "Retreat" is sounded at the end of the day. "Taps," composed during the American Civil War, is the most poignant of the bugle calls, played during flag ceremonies and funerals as a final farewell and to signal 'lights out'. The stirring impact of these calls has cemented their place in military culture and they continue to be used to this day.