The AIF had forestry units who felled timber, transported it to the mill and then cut it into lumber for buildings. Engineer units probably used them as well to move logs for bridge building.
Hope this helps
Cheers
Cliff
__________________
Cheers
Cliff Hutchings
aka MrRoo S.I.R.
"and on the 8th day he made trucks so that man, made on the 7th day, had shelter when woman threw him out for the night"
MrRoo says "TRUCKS ROOLE"