Complex sentence: In December 1910 he bought an aircraft from Alberto Santos-Dumont, and then enrolled at a flying school at Pau, gaining his pilot's license (No.448) on 13 March 1911.
Split into simpler sentences: In December 1910 he bought an aircraft from Alberto Santos-Dumont. He then enrolled at a flying school at Pau, gaining his pilot's license (No.448) on 13 March 1911.