Haeften actually did walk in front of Stauffenberg during the execution
Stauffenberg was third in line to be executed, with Lieutenant von Haeften after. However, when it was Stauffenberg's turn, Lieutenant von Haeften placed himself between the firing squad and Stauffenberg, and received the bullets meant for Stauffenberg. When his turn came, Stauffenberg spoke his last words, "Es lebe unser heiliges Deutschland!" ("Long live our sacred Germany!")[29][30]
From: https://en.wikipedia.org/wiki/Claus_Von_Stauffenberg#Execution, http://www.paralumun.com/stauffenberg.htm
I thought that was added into the movie for dramatic effect. Nearly brings tears to my eyes to know it actually happened in reality. share