Not certain if you guys have seen this.
From "HISTORY OF THE TWELFTH ENGINEERS, U. S. ARMY"
From page 7
Some of the supplies and equipment were slow in arriving
and on account of their scarcity no duplicate pieces were
issued except socks and underclothes. These were strenuous
times for Capt. Skelly and his Supply Department. The arms
and equipment issued were the old type, used in the Spanish-
American war, including the Krag-Jorgensen rifle. The motor
transport consisted of three Dodge touring cars, eleven Pierce-
Arrow two-ton trucks with express type bodies and ten Indian
motorcycles with side cars.
From page 115
The Springfield rifles, which had been issued when the old
Krag-Jorgensens were taken up after the Battle of Cambrai,
were now exchanged for the standard British Lee-Enfield rifle
in order to obviate any difficulty in ammunition supply should
the regiment be ordered into the British front Hne. A special
officer's and N. C. O's Bayonet school was started at Headquarters
under the direction of a Company Sergeant Major,
"Bayonets," Fourth Army B. E. F., who was temporarily
attached to the regiment for the purpose of instruction in
bayonet training. The mornings were devoted to the N. C. O's,
while the officers received instruction in the afternoon. Practice
in wave attacks, and offensive and defensive bayonet work
was given.
There is a fairly good photo on page 19, too.
http://www.archive.org/details/cu31924027818099
Culpeper