In a typical parade, what position should you take if instructed to 'stand by'?

When instructed to 'stand by' during a parade, the appropriate position is Parade Rest. This position allows for a balance between readiness and ease, maintaining a respectful posture while also allowing some relaxation. In Parade Rest, individuals stand with their feet shoulder-width apart, arms relaxed at their sides or behind their back, and body posture is straight. This position signifies that the individual is prepared for further instructions without being in the rigid stance of Attention.

While Attention is a more formal stance that signifies readiness for immediate action, it doesn't pertain to being in a state of preparation when waiting for further commands. Rest and At Ease denote even more relaxed stances that may not convey the level of discipline required in a formal parade setting, making Parade Rest the most appropriate position for this instruction.