.
Xenophon and Polybius
Thucydides and Sallust
Herodotus and Livy
Caesar and Josephus
Technology
Morale
A systematic approach
Attention to detail
The Macedonian brigade
The Greek phalanx
The Roman legion
The Persian regiment
Philosophy
Theology
Medicine
War
Strategic games
Tricks of the trade
Tactical philosophy
Operational art
Vegetius
Valentian
Maurice
Frontinus
Maurice
Belisarius
Leo the Wise
Constantine
Epic poems
Descriptive haiku
Narrative songs
Expostulatory chants
They are focused on tactics rather than strategy.
They do not provide a coherent philosophy of war.
They are written by theorists with no experience of war.
They do not provide any meaningful advice for modern generals.
Commentarii by Caesar
Strategikon by Maurice
Epitome Rei Militaris by Vegetius
Strategemata by Frontinus