There is not that much footage available from WWI, and this 6 hour+ UK produced set contains an extraordinary amount of it, along with great insights about what led up to the war-to-end-all-wars. Most importantly, it deals with these factors prior to U.S. involvement, and so the perspective is something different than a U.S. made doc would present.Year-by-year, the program looks at the developing technology that led to changes in how the war was fought. It additionally contains three chapters that address the military machines on LAND, in AIR and at SEA.I had chance to see this program in final production. It's truly well assembled and greatly informative. Nothing on the market rivals it.