The author offers a book report on a recently published book by this title written by Adam Hochschild. The book appears to offer an accurate account of this devastating war that featured inter-Nicene rivalries for world dominance among capitalist ruling classes at that time. The war, like all wars in the capitalist era also served several other purposes: stifling dissent and activist opposition in their home countries using appeals to patriotism and the huge profit opportunities from weapons production as well as from re-building of assets destroyed during war.
It's clear from reviewing this history, that nothing has substantially changed: it's still the same story because it still is the same criminal system that is driving history--capitalism.