November 1969 – May 1972, fighter requirements staff officer, Fighter Division, Directorate of Operational Requirements, Office of the Deputy Chief of Staff, Research and Development, Headquarters U.S. Air Force, Washington, D.C.
June 1972 – August 1973, graduate student, Aeronautical Engineering, Massachusetts Institute of Technology
July 1979 – September 1980, deputy commander for operations, 23rd Tactical Fighter Wing, England Air Force Base, Louisiana
October 1980 – April 1981, vice commander, 23rd Tactical Fighter Wing, England Air Force Base, Louisiana
April 1981 – April 1983, assistant deputy chief of staff for requirements, Headquarters Tactical Air Command,
Langley Air Force Base,
Virginia
April 1983 – July 1984, assistant deputy chief of staff for operations, Headquarters Tactical Air Command, Langley Air Force Base, Virginia
July 1984 – July 1985, deputy chief of staff for requirements, Headquarters Tactical Air Command, Langley Air Force Base, Virginia
August 1985 – July 1987, director of operational requirements, Office of the Deputy Chief of Staff for Research, Development and Acquisition, Headquarters U.S. Air Force, Washington, D.C.
July 1987 – July 1988, vice commander, Aeronautical Systems Division, Wright-Patterson Air Force Base, Ohio
August 1988 – June 1990, commander, Aeronautical Systems Division, Wright-Patterson Air Force Base, Ohio
June 1990 – March 1991, vice chief of staff, Headquarters U.S. Air Force, Washington, D.C.
March 1991 – June 1992, commander, Headquarters Tactical Air Command, Langley Air Force Base, Virginia
June 1992 – July 1995, commander, Air Combat Command, Langley Air Force Base, Virginia
Loh was awarded the Daedalian Fellowship for graduate study in 1972. Also, he is the recipient of the 1972 Air Force Research and Development Award, and the Air Force's
Eugene M. Zuckert Senior Management Award for 1989. In 2009 he honored by the United States Air Force Academy with their Distinguished Graduate award.[3]