A Generation of Lions Led by Lambs

In a recent follow up to an excellent article, James Fallows published the letter below from a veteran Marine officer. What are your thoughts regarding his basic premise: that there is a significant divide between the senior leaders of our military and the junior ones?

http://www.theatlantic.com/politics/archive/2015/01/a-generation-of-lions-led-by-lambs-the-chickenhawk-chronicles/384619/