Producers of television documentaries about the war have had to grapple with the "lions led by donkeys" interpretive frame since the 1960s. The 1964 seminal and award-winning BBC Television "The Great War" has been described as taking a moderate approach, with co-scriptwriter John Terraine fighting against what he viewed as an oversimplification, while Liddell Hart resigned as an advising historian to the series, in an open letter to "The Times", in part over a dispute with Terraine, claiming that he minimised the faults of the High Command on The Somme and other concerns regarding the treatment of Third Ypres. "The Great War" was viewed by about a fifth of the adult population in Britain and the production of documentaries on the war has continued ever since. While recent documentaries such as Channel 4's 2003 "The First World War" have confronted the popular image of lions led by donkeys, by reflecting current scholarship presenting more nuanced portrayals of British leaders and more balanced appraisals of the difficulties faced by the High Commands of all the combatants, they have been viewed by far fewer members the public than either 1964's "The Great War" or comedies such as "Blackadder".