A few random thoughts:
In my opinion, officers decide WHAT needs to be done, and WOSEs
focus on HOW it should be done. It is the exactly the same as the
duties of the executives and the middle management of a
corporation. Problems arise when an officer decides what should be
done without stopping to consider if it can be done practically.
This is very common because young officers do not think to consult
their NCOs before making decisions. You get stupid plans that
cannot possibly work and WOSEs trying to make them work "by
magic".
Units operate like families. The officer is the father and the NCO
under him (PS for a PC, CSM for an OC, etc.) is the mother. For
example, the father decides that the children need new clothes and
gives the mother the money for it. The mother then scolds them,
makes them eat their lunch, scolds them until they get on the bus,
scolds them while they try on their clothes, buys the clothes, then
scolds them all the way home. In the same way, the PC decides that
the men need more marksmanship training and obtains time at the
range, ammunition, medical support, transport, etc. The PS then
fucks the men upside-down until they fall in, fucks them
left-right-center all the way to the range, fucks them inside-out
while they shoot, fucks them some more, then fucks them until they
get back and clean their rifles. 
Most of the work of an officer is behind the scenes, like obtaining
resources from higher ups (like ammunition in peace and artillery
fire in war), planning and decision making. This work is "upward".
What I mean by this is that the officer mostly deals with the
people above him. In contrast, most of the work of an NCO is in the
face of his men. His work is mostly "downward", dealing with people
below him. Just like dad and mom.
Hope someone finds these enlightening. 