Books like The Decisive Wars of History
B. H. Liddell Hart
The Decisive Wars of History is 420 pages, about 7 hours 42 minutes at 250 words a minute.
12 books to read next
How long each takes
The Mind of the Strategist 5.2 h 
Makers of Modern Strategy 17.3 h 
Fiasco 8.9 h 
American Caesar 14.5 h 
For the Common Defense 13.5 h 
Invasion - They're Coming! 5.6 h 
Napoléon 11.1 h 
Makers of Modern Strategy 10.1 h 
Strategy 13.9 h 
Armed Struggle 8.9 h 
Young Bloods 10.3 h 
Presidents of War 13.8 h Bar height shows length. Estimated at 250 words a minute.