Claus von Stauffenberg is best known for his failed attempt to assassinate Adolf Hitler on 20 July 1944 in the "Wolf's Den" and where shortly after the failed "Operation Valkyrie" he was executed by firing squad in Bendlerblock.

Stauffenberg was supposed to place a suitcase with two armed bombs at the table around which Hitler and his officers were gathered. But when he and a co-conspirator under severe time pressure in a remote room only managed to arm one, he only brought the armed bomb to the meeting. One wonders why he didn't leave the second bomb in the bag, because when a bomb with a fuze and warhead explodes, another explosive charge will also explode if it's close enough, even if it doesn't have a fuze and warhead. - And then Hitler would presumably have been killed. The reason must be that he did not have the necessary knowledge about this even though he was a high-ranking officer in the German army.

According to a professor of history at McGill University, there were more than 40 assassination plans to assassinate Hitler during the Nazi regime, but the assassination on July 20, 1944, is the best known and the one that came closest to succeeding.

Claus von Stauffenberg's last words in front of the peloton were supposed to have been "Es lebe das geheime Deutschland" (Long live the secret Germany). A quote from the poet Stefan Georges "Geheimes Deutschland".