You could - but its going to be a ground overlay - and subject to any surface issues (vehicles, fragments etc).
Probably works if your in a super big hurry - but ideally you'd have them under 1M or more of earth in a protected shroud.
Defensive position stuff I am way stale on - I'm really only current on door kicking or sniping, and related matters.
I was thinking more along the lines of an expedient comms system when laagering in for the night.
Wouldn't it be particularly useful in the Echelons (B and A rear) when they are going stationary? You might even get away with putting a spring loaded spool of fiber on each Log Vehicle and a mating receptacle. Yes, it will be vulnerable and a trip hazard but it might get rid of that big red blob in the rear.
Don't know what to make of all the TOC/TAC/Alt traffic along the axis of advance. Does kind of stick out like a sore thumb.
In fact, if I look at that image, I see a really nicely drawn arrowhead pointing directly along a road that terminates in a village.
Red blob of log area in the rear, nicely lined up with square borders.
Red line of command elements along the road.
Blue tactical dots between the command elements and the log elements.
More blue tactical dots in a screen around the command elements with flankers creating the barbs of the arrowhead.
Do you want to launch an air raid? An artillery raid? Block the advance? Or set up an ambush with a kill zone?