Complex sentence: In 1936 he was once more named chief of cabinet of Pierre Cot's Air ministry of the Popular Front, and along with Cot assisted the Spanish Republic by sending them planes and pilots.
Split into simpler sentences: In 1936 he was once more named chief of cabinet of Pierre Cot's Air ministry of the Popular Front. In this capacity, Moulin was deeply involved in Cot's efforts to assist the Spanish Republic by sending them planes and pilots.