of the leading file, and takes command when the last one of the old
sentinels is relieved, changing places with the corporal of the new
guard. (108)

=1671.= When the relief arrives at six paces from a sentinel (See Par.
1729), the corporal halts it and commands, according to the number of
the post: =No. (--).=

Both sentinels execute port arms or saber; the new sentinel approaches
the old, halting about one pace from him. (See Par. 1733.) (109)

=1672.= The corporals advance and place themselves, facing each other,
a little in advance of the new sentinel, the old corporal on his
right, the new corporal on his left, both at a right shoulder, and
observe that the old sentinel transmits correctly his instructions.

The following diagram will illustrate the positions taken:

[Illustration]

R is the relief; A, the new corporal; B, the old; C, the new sentinel:
D, the old. (110)

=1673.= The instructions relative to the post having been
communicated, the new corporal commands, =Post=; both sentinels then
resume the right shoulder, face toward the new corporal and step back
so as to allow the relief to pass in front of them. The new corporal
then commands, =1. Forward, 2. MARCH=; the old sentinel takes his
place in rear of the relief as it passes him, his piece in the same
position as those of the relief. The new sentinel stands fast at a
right shoulder until the relief has passed six paces beyond him, when
he walks his post. The corporals take their places as the relief
passes them. (111)

=1674.= Mounted sentinels are posted and relieved in accordance with
the same principles. (112)

=1675.= On the return of the old relief, the corporal of the new guard
falls out when the relief halts; the corporal of the old guard forms
his relief on the left of the old guard, salutes, and reports to the
commander of his guard: "=Sir, the relief is present="; or "=Sir, (so
and so) is absent=," and takes his place in the guard. (113)

=1676.= To post a relief other than that which is posted when the old
guard is relieved, its corporal commands:

=1. (Such) relief, 2. FALL IN=; and if arms are stacked, they are
taken at the proper commands.

The relief is formed facing to the front, with arms at an =order=; the
men place themselves according to the numbers of their respective
posts, viz., =two=, =four=, =six=, and so on, in the =front rank=, and
=one=, =three=, =five=, and so on, in the =rear rank=. The corporal,
standing ab