Question: Johannes "Macky" Steinhoff, was a German general, NATO official and Luftwaffe fighter ace during World War II, and became one of the principal officials tasked with building the German Air Force during the Cold War, the aerial warfare branch of the Bundeswehr, the armed forces of which country?
Sentence (from "German Air Force"): With a strength of 28,448 personnel (28 February 2017), it is the fourth largest air force within the European Union, after the air forces of the United Kingdom, France and Italy.
Relevant evidence: No