7 vs 6
Hello -- in the south, the U.S. 6th Army Group commanded the U.S. 7th and French 1st Armies. The "position of Allied armies on 10 May" map I made did not show the army groups, just the field armies like the 7th. As for von Braun, this page discusses his surrender. Cheers, W. B. Wilson (talk) 05:16, 19 March 2012 (UTC)
U.S. scheme of maneuver, 1945
Hello Luis -- the south / southeast push of the 6th Army Group, as well as of the 3rd Army of 12th Army Group has been debated with some heat by prominent historians like Russell Weigley in "Eisenhower's Lieutenants". My understanding is that it was driven by two major issues. One was that Eisenhower decided not to attempt to capture Berlin. Note that the farthest eastward advance of the 12th Army Group was essentially completed by mid-April 1945 and a lot of those troops basically stayed in place the final three weeks of the war. Patton's 3rd Army was directed southeast and overran most of far southeast Germany, parts of western Czechoslovakia, and middle Austria until VE-Day. Eisenhower's justification for this advance of Patton's army (practically a small army group in size by this point of the war) was that the Nazis supposedly were preparing a last stand in the Alps (National redoubt) and so Patton's forces as well as Devers' 6th Army Group moved against this possibility.
The debate of the mainstream historians focuses on the decision to not move further east towards Berlin as well as how gullible the Allies were to believe Nazi propaganda about the "Alpine Redoubt".
There have also been speculative works that these troop movements were more concerned with the capture of German scientists and technology. Certainly, there was great interest among the Western Allies regarding German rocket technology and atomic research (see Alsos Mission). There are also claims among the paranormal community that odder things were going on -- see Nazi UFOs for one example. Hans Kammler features prominently in these claims.
I have no absolute idea who is right among these various claims but tend to believe the mainstream historians are probably correct for the most part. I will say, though, one should not underestimate the oddness of certain Nazi ideas. They expended resources on research into paranormal topics that would have never been considered by other governments. Given that the Nazis were defeated, the attitude of the other governments seems to have been the prudent one. Cheers, W. B. Wilson (talk) 19:55, 1 April 2012 (UTC)
You may also find this page of use in your research. Cheers, W. B. Wilson (talk) 20:11, 1 April 2012 (UTC)