The ’plane will call for signals at ZERO plus 1 hour.
ZERO plus 2 hours.
ZERO plus 2½ hours.
and at such other times as may be necessary.
S.O.S. signal is a rifle grenade bursting into two red and two green lights.
24. Second Lieutenant Brooke will be responsible for:—
(a) Keeping liaison with 1/4th Royal Lancaster Regiment during their advance to the Yellow Line.
(b) Establishing a Battalion forward command post about D 13 central and keeping the whole front under close observation.
25. Acknowledge in writing.
(Signed) R. N. L. BUCKMASTER,
18th September, 1917.
Captain and Adjutant,
Issued at 8 a.m.