Final answer:
Instruments have served as crucial tools for communication, morale-building, and fostering a sense of unity in military history. They include the use of drums, signal fires, flags, and banners for coordination, alongside marching music that evoked pride and solidarity. Instruments also represented an emotional connection to soldiers' experiences and home.
Step-by-step explanation:
Instruments have played a vital role in conveying military comradeship throughout history. They have been used as tools for communication and morale-building among troops. For instance, signal-fires and drums were utilized during night skirmishes to maintain coordination and unity, while flags and banners served a similar purpose during daylight. Furthermore, the cadences of marching bands would instill a sense of pride and solidarity among soldiers, as evidenced by the stirring sounds of drums and the vibrant tones of brass instruments that accompanied the young volunteers described in 'The War Prayer.'
These instruments did more than just facilitate commands; they were a conduit for emotional bonding, with the potential to lift spirits in the mornings when soldiers were most alert, and provide comfort as fatigue set in by the day's end. Instruments were also a symbol of remembrance and attachment to home, as evoked in letters from World War 2 soldiers that captured the essence of their experiences. Hence, whether through enhancing communication, elevating morale, or symbolizing union, instruments have been integral in fostering a sense of companionship among military personnel.