From the front cover "Rules and army lists for the Spanish Civil War and more!"
The main core ruleset is described like that:
"Triumph and Tragedy is a set of wargame rules that allows for both straigth historical games as well as those with a cinematic, more adventurous approach.
You can re-enact conflicts in settings as diverse as Russia, China, India, Darkest Africa an many more."
So this book gives players anything they want to accurately portrait battles and skirmishes during the Spanish Civil War.
While the basics of the game are kept, army lsts, scenarios, historical coverage and "flavour" rules are provided to give the game a decisive tuning for the period covered.
An optional, this time diceless, system to manage vehicle movement is given too.