Question: What was the former political position of the president who appointed Melvyn R. Paisley United States Assistant Secretary of the Navey (Research, Engineering and Systems)?  
Sentence (from "United States Under Secretary of War"): By November 1941 the Office of the Under Secretary of War (OUSW) employed 1,136 people, of whom 257 were military officers and the remainder civilians.
Relevant evidence: No