Dreadnought: Britain, Germany, and the Coming of the Great War. By Robert K. Massie.
It seems like interest in World War I has increased lately. It's hard for me to read about it--armies exchanging, in battle, the same territory over and over; trench warfare; battles in which tens of thousands were killed being a routine thing . . . . But reading about the dreadnoughts in World War I (a type of warship of that time) might be more pleasant.
This is an enormous book--1040 pages!
And it's got great ratings--4.6 (216) at Amazon.
The price? Only $1.99, an 86% markdown from the digital list price of $13.99 (that's a bargain in itself).
https://www.amazon.com/Dreadnought-B.../dp/B0089EHK70.