Captivating History:100+ Titles The Second World War, D Day. The First World War & More [Kindle Edition] Free ~ Amazon

Amazon has over 100+ Captivating History Books [Kindle Edition] for free.
The link (which probably works best on desktop) should take you to the beginning of the list (or sort by Price:Low to High). The list finishes on page 11 with the title "Fidel Castro" as the last free ebook, check the prices on the right of your screen as paid copies will show non zero price.