This listing is for Part 20 - The thirteenth disk of the series in PAL video format with a 4:3 aspect ratio, making it suitable for European, Japanese, and Middle Eastern DVD players. 

The cardboard sleeve case adds to the longevity of the set, and the war-themed franchise appeals to history buffs and educational enthusiasts. 

With a certificate rating of E, this set is suitable for all ages to enjoy the detailed account of The Great War.