On 20 July, Captain Klausing stayed behind at the Bendlerblock in Berlin while Stauffenberg went to the Wolf's Lair to try again, and was jointly responsible for forwarding Operation Valkyrie orders. He forwarded the orders to, among others, Ewald-Heinrich von Kleist-Schmenzin. On the night of 20–21 July, after it had become apparent that Stauffenberg's briefcase bomb had not killed Hitler, Klausing was the only one to escape the firefight at the Bendlerblock subsequent to which Stauffenberg and several other conspirators were captured, but the next morning, he gave himself up to the Gestapo.