As an academic of politics and war studies, specifically an MA in the Second World War, this is a very good documentary series. Personally, I find The World At War the best war documentary series followed by the documentary's Civil War and Vietnam War. However, this is a reasonable documentary series concerning warfare in the 20th Century. It does unfortunately give incorrect information, of which I will only give one example. Towards the end of the first episode it mentions biological warfare, declaring that it has never been used in warfare. This is unbelievably incorrect especially when taking into consideration that the Japanese war over China in the 1930's, which included the rape of Nanking, used biological warfare from the Japanese Unit 731 constantly. Biological warfare has also been used many times since by many nations but this documentary wishes to name it chemical, eg mustard gas, and not biological. Either very naive or for the benefit of politics. Even so, The Warfare of the Century is a reasonably good documentary series especially for those not so knowledgeable on the subject. Just don't take everything it says as gospel.