In 1919, Horney was reappointed as lieutenant colonel and later served as ordnance officer of the Philippine Department.

Horney graduated from the United States Military Academy as number six of sixty-five in the Class of 1891.

Horney attended primary and secondary school at Mechanicsburg, Ohio and taught in order to support his family.

[1][citation needed] In 1911, Horney designed and constructed a water dam on Mississippi, in which the Western Society of Engineers examined.

[1] On September 30, 1930, at the age of 64, Horney retired as brigadier general[3] and lived in San Mateo, California.