Sure, and for the same reason that people still read Sun Tzu and The Art of War. It’s because strategy and tactics and logistics are meaningful in any endeavor that involves conflict – or just “competition” – and moving, motivating and leading numbers of other people. Clausewitz wrote specifically about how Napoleon had changed the act and practice of war in Europe, and Sun Tzu wrote about more ancient forms of warfare, but the underlying strategy in both works still holds, even today, among warriors and others.