The Second World War swallowed up the years between 1939 and 1945, affecting people across the globe and ending as the deadliest conflict in human history. As some of humanity's darkest days, it's origins and legacy are taught in schools across the world. It may be easy to understand who attacked who - but it isn't easy to fully comprehend the scale until it's laid out for you in simple, easy to understand terms.

Just like this two-part video series does.