Animated documentary is a genre which predominantly uses animation form for telling nonfiction stories. It’s an independent genre in itself that differs from live-action documentaries in terms of the very visual differences and stretching the storytelling boundaries of conventional documentaries. It’s been exactly 100 years since Winsor McCay made The Sinking of Lusitania, the officially recorded first-ever animated documentary in cinema history. Ever Since the use of the animation medium for documentary filmmaking had largely been unexplored for the next 20 to 25 years till the mid-40s, apart from Fleischer Studio’s works such as Einstein’s Theory of Relativity (1923), which had used animation for a kind of educational documentary. Over the Silent era, it's mostly been a lot of experimentation that animation has undergone, both in terms of form and narrative. The animated works of German legends like Hans Richter, Walter Ruttmann, Oskar Fischinger and Viking Eggeling were notable in this period but were overshadowed by the success of their German live-action counterparts like F.W. Murnau and Fritz Lang. Even though the success of R.J. Flaherty’s documentary films had a predominant effect on live-action documentary filmmaking over the next decade, the arc of animation was still set away from the documentary genre.