Question: Who was the head of the German Army's Ballistics and Munitions Branch during the Space Race of World War II?
About the article "Space Race", section "World War II".

Candidate passages:
World War II.
The Space Race can trace its origins to Germany, beginning in the 1930s and continuing during World War II when Nazi Germany researched and built operational ballistic missiles.
Starting in the early 1930s, during the last stages of the Weimar Republic, German aerospace engineers experimented with liquid-fueled rockets, with the goal that one day they would be capable of reaching high altitudes and traversing long distances.
The head of the German Army's Ballistics and Munitions Branch, Lieutenant Colonel Karl Emil Becker, gathered a small team of engineers that included Walter Dornberger and Leo Zanssen, to figure out how to use rockets as long-range artillery in order to get around the Treaty of Versailles' ban on research and development of long-range cannons.
Wernher von Braun, a young engineering prodigy, was recruited by Becker and Dornberger to join their secret army program at Kummersdorf-West in 1932.
Von Braun had dreams about conquering outer space with rockets, and did not initially see the military value in missile technology.
During the Second World War, General Dornberger was the military head of the army's rocket program, Zanssen became the commandant of the Peenemünde army rocket centre, and von Braun was the technical director of the ballistic missile program.
They would lead the team that built the Aggregate-4 (A-4) rocket, which became the first vehicle to reach outer space during its test flight program in 1942 and 1943.
By 1943, Germany began mass-producing the A-4 as the Vergeltungswaffe 2 ("Vengeance Weapon" 2, or more commonly, V2), a ballistic missile with a range carrying a warhead at .
Its supersonic speed meant there was no defense against it, and radar detection provided little warning.
Germany used the weapon to bombard southern England and parts of Allied-liberated western Europe from 1944 until 1945.
After the war, the V-2 became the basis of early American and Soviet rocket designs.
At war's end, American, British, and Soviet scientific intelligence teams competed to capture Germany's rocket engineers along with the German rockets themselves and the designs on which they were based.
Each of the Allies captured a share of the available members of the German rocket team, but the United States benefited the most with Operation Paperclip, recruiting von Braun and most of his engineering team, who later helped develop the American missile and space exploration programs.
The United States also acquired a large number of complete V2 rockets.
The Munitions Building, constructed in 1918, contained of space across three stories, and was designed to provide temporary accommodations for 9,000 Department of War employees.
During World War I, the War Department had greatly expanded, and by the end of the war, the Main Navy and Munitions Building together housed 14,000 military personnel, including the Secretary of the Navy.
A large parking lot wide and long, was located at the rear of the Munitions Building, with space to accommodate approximately 1,000 cars.
Various small exhibits were on display in the corridors of the Munitions Buildings, showing military uniforms, types of gas masks, military daily rations, and Army photographs.
The Munitions Building was separated from the Main Navy Building by a vehicle entryway at 19th Street, and the main entrance of the Munitions Building was located at 20th Street.
The Munitions Building had a total of eight wings.
At the end of World War I, the Munitions Building housed technical branches, including the Quartermaster General, United States Army Corps of Engineers, Ordnance Corps, Chemical Warfare Service, Signal Corps, and Army Air Service.
In March 1923, the Army's Finance Office also moved into the Munitions Building.
In February 1924, plans were put forth to build an oil steam plant for the Main Navy and Munitions Building.
In November 1933, the Army Inspector General's office, along with the Organized Reserves, the welfare section of the Secretary's office, and the Office of Chief of Chaplains moved into the Munitions Building.
The National Guard Bureau also was housed in the Munitions Building, as was the Army Industrial College. 
The 3rd Mountain Division () was a formation of the German Wehrmacht during World War II.
It was created from the Austrian Army's 5th and 7th Divisions following the Anschluss in 1938. 
The SdKfz 265 "Panzerbefehlswagen" was the German Army's first purpose-designed command tank, and the primary German command tank in service at the beginning of World War II.
Converted from the Panzer I "Ausf".
B, the SdKfz 265 was to see considerable action during the early years of the War. 
At the time when the Munitions Building was constructed, the War Department was headquartered in the State-War-Navy Building, which was completed in 1888 and located on 17th Street NW, next to the White House.
By the 1930s, the War Department was being squeezed out by the Department of State, and the White House was also in need of additional office space.
In August 1939, Secretary of War Harry H. Woodring, along with Acting Chief of Staff of the Army George C. Marshall, moved his office into the Munitions Building.
In the late 1930s, a new War Department Building was constructed at 21st and C Streets in Foggy Bottom, but upon completion, the new building did not solve the department's space problem, and ended up being used by the Department of State.
To help deal with the space shortage, a fourth story was added to the Main Navy and Munitions Buildings during World War II.
Coming into office, with World War II breaking out in Europe, Secretary of War Henry L. Stimson was faced with the situation of the War Department spread out in numerous buildings across Washington, D.C., as well as Maryland and Virginia, and the Munitions Building was overcrowded.
On July 28, 1941, Congress authorized funding for a new Department of War building in Arlington, Virginia, which would house the entire department under one roof.
When office space became available in 1942 at the Pentagon in the first completed wing, the Secretary of War vacated the Munitions Building and moved to the Pentagon.
The Department of War vacated the Munitions Building in 1943, once construction of the Pentagon was completed.
The Department of Navy took over the Munitions Building once the Department of War relocated out of the building, and placed the Navy's Material Systems Command offices in the Munitions Building.