The title of the book suggests it is a history of the entire Stauffenberg family, but I would say this is slightly overstated. You cannot read Stauffenberg: A Family History, 1905-1944 (Amazon US, UK, CA, DE [english], DE [german]) without coming away thinking the book was primarily about Claus von Stauffenberg. And that’s no complaint, for Claus von Stauffenberg is clearly the Stauffenberg about whom we want to read.
If, a few years ago, you did not know who Claus von Stauffenberg was, you most likely found out thanks to Tom Cruise. If you saw the film Valkyrie, you know Claus von Stauffenberg was a member of the military resistance against the National Socialist regime and that he attempted to assassinate Adolf Hitler. That’s indeed the extent of most people’s knowledge of Stauffenberg: a pity, because his character is much richer than just that.
The assassination attempt was indeed the limit of my own knowledge of Stauffenberg prior to reading Hoffmann’s book. The most important aspect of Stauffenberg’s life of which I had been entirely ignorant was his and his brothers’ very close association with the German poet, Stefan George. Claus Stauffenberg’s brother, Berthold, was one of the two persons named by George as executors of his estate; Berthold appointed Claus as his successor in that role. Hoffmann dedicates a whole chapter and much of another to describing the Stauffenbergs’ closeness to George and continues on occasion throughout the book to allude to “The Master’s” influence on Claus. Given the the brothers’ roles as executors and the fact that Claus often took time — including during the war — to look after business concerning George’s estate, it appears that Hoffmann is not overstating this influence.
As Hoffmann continues to weave Stefan George and his influence throughout the remainder of the history, he moulds the character of Claus Stauffenberg as an aristocratic officer striving to fulfill the heroic deed which was expected of him by his membership in what George called the “Secret Germany.” According to Hoffmann’s story, it was not unusual for Stauffenberg to cite George’s poems when convincing others of the need to remove Hitler by force. When one Stauffenberg friend expressed distaste over the idea of murdering Hitler, Stauffenberg reminded her that “tens of thousands of Jews are being killed most cruelly.” He explained that the officers had to choose between “action or inaction”:
He believed that God had assigned a mission to him and he had devoted himself to it entirely. His inner calling gave him the certainty that was so convincing to others. 
He then quoted a George poem to this friend:
If ever this nation from her cowardly slackness
Remembers her election, her mission:
Then in the morning breeze a true emblem will flutter
The royal standard and bow itself in greeting
To the Noble – the Heroes!
Hoffmann, to his credit, does not shy away from the fact that the romantic, aristocratic Stauffenberg also supported the Nazi regime until at least 1938 and only gradually turned to resistance thereafter. (“Supported” may be saying too much: he approved of the leadership principle [Führerprinzip], re-armament and what he perceived as the renewed importance of the officer corps; but he was much too aristocratic to get his hands dirty with party politics, particularly of the “brown” sort.) He came to resist later than some other prominent officers such as Ludwig Beck, who had already resigned his commission before the start of war, and also later than other aristocrats such as Helmuth James, Count von Moltke.
I haven’t researched criticisms (if any) of Hoffmann’s books on Stauffenberg. I would imagine that if any exist then one point of dispute might be the centrality of Stefan George in the Stauffenberg biography; another might be that Hoffmann simply romanticizes his subject too much. I’m not saying that this is the case; I’m merely saying that as I read the book I had the feeling that if it could be claimed that it diverts from a “scholarly” historical approach, then it probably would be in these two ways.
Personally, I was not bothered at all. I enjoyed this book immensely and very much appreciated getting to know this fascinating historical character in such depth.
(Image credit: I found the lead image for this article at Wikimedia Commons. The photo is credited to Adam Carr and is said to be in the public domain. The image shows a plaque on the wall of the inner courtyard at the “Bendlerblock”, formerly Army headquarters in Berlin, today the home of the German Resistance Memorial Center. Stauffenberg and others were shot in this courtyard on the evening of the 20th of July 1944. The plaque, translated, reads, “Here died for Germany on 20 July 1944:” and lists the officers in the resistance who were killed that night, Stauffenberg among them.)
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