This weeks marks the 3 year anniversary of the assassination of Franz Ferdinand, and the event that would send the world into one of the most disastrous conflicts in history. As America enters the war, we look at one of the big game changers of the current conflict, the introduction of Arial warfare. Meanwhile, more advances in film with the introduction of colour. And we look at another, more feel-good war journal.For the Free audio-book recommended, check out: audibletrial.com/yesteryearsnewstoday