What will Indy Neidell do with himself after mid-November? That’s a question making its rounds on the nerdosphere these days. Neidell is the host of “The Great War,” a weekly presentation on YouTube that chronicles each week in World War I – from July 1914 to November 1918 – and does it exactly 100 years later. By late last month, Neidell and his crew had completed 630 episodes, at least one for each week of the war plus many special episodes highlighting aspects of the 4½-year carnage.

Each week, Neidell, ever earnest, wearing a sweater-vest over a short-sleeve shirt, sits at a desk with the implements…