I saw in another thread that you have been reading Sun Tzu.
Iīd recommend you to read more current books as well.
Donīt take others accounts as gospel though.
Read a few different books on each subject and try to form your own opinion on what might be good lessons to learn.
Remember when you read that the information have already been filtered through someone elses (in most cases more then one set of) eyes and mind.
You might even want to start a thread in the books forum asking the members here for good books on combat leadership and tactical decision making by leaders during past conflicts?
Just a suggestion.
The only way to truly know is to do it yourself.
"We are the pilgrims, Master
We shall go always a little further,
it may be beyond the last blue mountain barred with snow,
Across that angry or glimmering sea..."