The 'Valkyrie' in Germany refers to the 20 July Plot in 1944. A group of German officers attempted to assassinate Hitler. They named their operation 'Valkyrie'. Their motivation was mainly due to the fact that they saw Hitler leading Germany to destruction in World War II. They wanted to take control after his death and negotiate a peace with the Allies.
The Valkyrie plot is significant as it shows that not all Germans were blindly following Hitler. There were those within the military and other sectors who recognized the evil of the Nazi regime. It was a desperate attempt to save Germany from further destruction in the war.