As a tradition, no. Old books like this are often read in a management context. For example, at my local book shop, The Book of Five Rings is in the Business section[1]. The Art of War by Sun Tzu[2] can be applied to any context you want and it's usually still good advice. Re: The Art of War[3], wikipedia says:

> There are business books applying its lessons to office politics and corporate strategy. Many Japanese companies make the book required reading for their key executives. The book is also popular among Western business management, who have turned to it for inspiration and advice on how to succeed in competitive business situations. It has also been applied to the field of education.

Here's where I start talking out of my ass: If you think about it, aren't generals the original managers? They had to coordinate the actions of thousands of people. Sometimes hundreds of thousands. They have to delegate to their subordinates because it'd be impossible to micromanage everything. Also, I think it's more than a coincidence that the quote seemed to fit so well. Outsourcing is hiring mercenaries.

[1]: http://www.amazon.com/Book-Five-Rings-Miyamoto-Musashi/dp/15... [2]: http://www.amazon.com/The-Art-War-Liddell-Hart/dp/0195014766... [3]: http://en.wikipedia.org/wiki/The_Art_of_War#Application_outs...