There are two books sitting on my shelf that I think give a good idea of the depth and bredth of the Soldier skill:
http://www.amazon.com/Soldiers-Manua...=STP+21-1-SMCT
and
http://www.amazon.com/Soldiers-Manua...STP+21-24-SMCT
These represent all the stuf every soldier is supposed to know, or at least have in their hip pocket. (The first looks like just a couple of points in the skill, the second alot more).
My NCOs were assigned a set of tasks in these books that they could teach at a moment's notice. It helped fill up dead time in the training schedule.
Unless I'm wildly missing the intent of the skill...