For distinguished service as regimental commander during the Meuse-Argonne campaign in World War I, he was awarded a citation certificate by Commander-in-Chief, A.E.F., the French Fourragere and the Navy Cross. In 1928 he served in Nicaragua and was awarded the Distinguished Service Medal and the Medal of Merit of Nicaragua.
Brigadier General Dunlap lost his life in attempting to rescue a woman caught in a landslide in France, 19 May 1931.