Valkyrie is introduced in Issue 3 of the comic arc, where she talks with Skorzeny, in a train somewhere in Croatia, about Germany's indecisiveness with funding their alternative weapons division, opting instead to spend it on various other technologies such as the V-4 rocket and the Enigma machine, leaving their assets spread out too thinly. They predict that Germany is losing the war, and laments that they continue to serve regardless of this thought. Spoilers end here.