The procession circling Jericho on the second day takes on a highly organized and continuous character, marking a clear shift from the initial journey from Gilgal. The march of the Israelites is executed with strict military and spiritual precision, beginning the very moment they depart from their camp [מלבי״ם]. At the front marches the vanguard, immediately followed by the priests carrying the Ark of God. Bringing up the rear is a dedicated guard, a vital role assigned to the tribe of Dan. Continuing their historical duty from the desert wanderings, their purpose is to gather any stragglers who might fall behind the main group [רש״י].
As the procession moves forward, the priests play an active and unceasing role. They begin sounding their horns the instant the march commences and maintain a continuous blast without any interruption throughout the entire journey [מצודת דוד, מלבי״ם]. This coordinated effort highlights a perfect parallel between the different segments of the nation. Just as the rear guard marches steadily forward, the priests simultaneously sound their horns in an unbroken rhythm. The result is a seamless, unified procession of continuous walking and blowing, binding the military and spiritual forces together into one cohesive movement [רד״ק].