=863.= The guard having passed 12 yards beyond the officer of the day, the adjutant halts; the sergeant major halts alongside of the adjutant and 1 yard to his left; they then return saber, salute, and retire. The commander of the guard then, without halting, breaks the guard into column of fours and marches it to its post. =864.= The officers of the day turn toward each other and salute, the old officer of the day turning over the orders to the new officer of the day. While the band is sounding off and while the guard is passing in review the officers of the day remain at attention. =865.= If the guard be not divided into platoons the adjutant commands: 1. =Guard right turn=, 2. =MARCH=; 3. =Guard=, 4: =HALT=, and it passes in review as explained; the commander of the guard is 3 yards in front of its center guide, the adjutant is 6 yards from the rank and abreast of the commander, the sergeant major covers the adjutant and marches abreast of the rank. RELIEVING THE OLD GUARD--(FORMAL GUARD MOUNTING, MOUNTED.) =866.= As the new guard approaches the guardhouse the old guard is formed in line at the carry saber, its buglers 3 yards to its right; when the buglers at the head of the new guard arrive opposite the left of the old guard its commander commands: 1. =Present=, 2. =SABER=; both commanders salute and, when the new guard has passed the commander of the old guard, the latter commands: 1. =Carry=, 2. =SABER.= The buglers and guard continue marching without changing direction until the rear of the column has passed 9 yards beyond the buglers of the old guard, when the commander of the new guard commands: 1. =Fours right=, 2. =MARCH.= =867.= The buglers and guard are marched 3 yards in rear of the line of the old guard, when the commander of the new guard commands: 1. =Fours right about=, 2. =MARCH=; 3. =Guard=, 4. =HALT=; 5. =DRESS=; he then, facing to the front, aligns his guard so as to be on a line with the old guard and commands, =Front=; the buglers of the new guard are 3 yards to the right of the rank. =868.= The new guard being dressed, the commander of each guard, in front of and facing its center, commands: 1. =Present=, 2. =SABER=, resumes his front, salutes, resumes the carry, faces his guard, and commands: 1. =Carry=, 2. =SABER.= Each guard is then presented by its commander to its officer of the day; if there be but one officer of the day present, or if an officer acts in the capacity of old and new officer of the day, each guard is presented to him by its commander. =869.= If another person entitled to a salute approaches, each commander of the guard brings his own guard to attention if not already at attention. The senior commander of the two guards then commands: 1. =Old and new guards=, 2. =Present=, 3. =SABER.= The junior will salute at the command "Present, Saber," given by the senior. After the salute has been acknowledged the senior brings both guards to the "Carry, Saber."