On March 21, 1943,

Hitler was traveling to Smolensk from Rastenburg via flight.

He was scheduled
to visit the Army Group Center at Smolensk.

But Germany Army’s Colonel Henning von Tresckow and General Friedrich Olbricht

had plotted to kill Hitler. 

Tresckow and
Olbricht had placed a bomb on Hitler’s flight.

The bomb failed
to go off and Hitler lived.

Tresckow died by
suicide after another failed assassination attempt in July 1944. 

Olbricht was
arrested and executed
in July 1944.