[.ca] Warfare in Ancient Greece: A Sourcebook (ISBN 0415143551)

Good resource:
Although not a large volume, Sage's book is a great substitute for hours of research. He extracts information on equipment, tactics, and organization from multiple ancient records (Thucydides, Arrian, Xenophon, Homer, etc) and uses them to create a very thorough picture of ancient warfare and ancient armies.

Excellent sourcebook:
This is an excellent collection of exercepts from ancient sources on the nature of warfare in ancient Greece. Excellent resource for ancient history teachers.