[RSwank]

I found this newspaper article and I think this is the F/O Clifford W Nelson we seek.
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Evansville Courier and Press, October 10, 1944 (Evansville, Indiana)

NELSON BROTHERS HAVE FURLOUGHS
Mt Vernon, Oct 9—(Special)
Three sons of Mr. and Mrs. Golston Nelson, East Lynn township, two of them veterans of many months overseas service on opposite sides of the globe, have had furloughs at home together. All are in the army air forces.

Tech Sergt. Curtis Nelson, 28, was in the India-Burma-China theater of war for 32 months in the service command of the 14th army air force. Flight Officer Clifford Nelson, 24, has a record of 80 missions in 21 months service in the African, Sicilian, Italian and Corsican campaigns. He wears the air medal and two oak leaf clusters.

Curtis and Clifford Nelson have been in service for four years.

Master Sergt. Paul Nelson 26, who is stationed at Avon Park, Fla, has a service record of two-and-a-half years. The simultaneous furloughs of the two veterans of foreign service occurred by chance. Learning that his two brothers were at home, Sergt. Paul Nelson succeeded in obtaining a furlough and completed the family reunion.