Focusing mainly on the Greeks, Stephen Pressfield has made a name with such books as:

A book about Thermopylae that is taught at West Point, Annapolis, and the Marine Corps Basic School.

A novel set in the Pelopponesian War and Alcibiades' involvement.

Set against the adventures of Alexander.

One soldier's story as a member of a great military power that invades the tribal regions of Afghanistan..hint, hint.
Any thoughts on this author?