Harvard Business Review has a series of posts on leadership lessons from the military.  I have long admired the approach our military takes in developing its personnel.  The practice of using every operation as a chance to learn and improve would serve every organization well to emulate.  I also believe organizations that develop leadership capabilities at all levels are better positioned for success.

I encourage you to go to the site linked above and the posts.  Not all of the entries will translate to your context but I think you will find them thought provoking.