In a personal conversation on 13 December between Walther Model and Friedrich von der Heydte , who was put in charge of Operation Stösser , von der Heydte gave Operation Stösser less than a 10 % chance of succeeding .
In a personal conversation on 13 December between Walther Model and Friedrich von der Heydte , who was put in charge of Operation `` Stösser '' , von der Heydte gave Operation `` Stösser '' less than a 10 % chance of succeeding .