WN has a lot of topics. Here is an index of topics per chapter:
Book 5
- Chap 1
- Army vs Militia
- Effects of Firearms
- Carthage, Hannibal
- Fall of the Western Roman Empire
- Tribal Militias (German, Scythian)
- European Soldiers (Russian, British, Spanish)
- Firearms vs Martial weapons
- Rich Nation military vs Poor nation’s military
- Chap 2