For those who like to learn visually, this is one of the better resources available in understanding the scale and damage that occurred during World War II. This interactive documentary written and narrated by Neil Halloran, examines the human cost of WWII and the decline in casualties in the years since that conflict.
The video The Fallen of WWII discusses both military and civilian fatalities and uses excellent imagery and graphics to illustrate the most significant war of our time. It also provides us with a valuable history lesson along the way. The website encourages donations from viewers for those who feel that it is appropriate to do so, but you are able to watch the video for free via the site, and also via YouTube.