'Pass on your orders.' the commander instructs the active sentinel. Post and orders, remain as directed.' He replies. 'Orders acknowledged.' Answers the relieving sentinel, who then steps into position at the center of the black mat. As soon as the relief commander passes, the new sentinel begins his own walk

'Pass on your orders.' the commander instructs the active sentinel. Post and orders, remain as directed.' He replies. 'Orders acknowledged.' Answers the relieving sentinel, who then steps into position at the center of the black mat. As soon as the relief commander passes, the new sentinel begins his own walk