The Kriegsmarine did not maintain an independent naval intelligence branch, but instead relied upon the Abwehr, which coordinated intelligence for all branches of the German military. Admiral Wilhelm Canaris was Chief of the Abwehr for most of its existence until he was replaced just prior to the 20 July plot against Hitler. Thereafter the Abwehr was folded into the Sicherheitsdienst and was run by the SS under Walter Schellenberg.[2]