{Infobox military person
|name= William C. Haggard
|birth_date= Sioux Falls, South Dakota, U.S.
|death_place=
|placeofburial=
|placeofburial_label=
|image=hag13.jpg
|caption=
|nickname= Ray
|allegiance= United States of America
|branch=
United States Army
|servics= On Duty,Currently In Syria
|rank=
Sergeant Major of the Army
|commands=
|unit=
|battles=
|awards=
Army Distinguished Service Medal
|commands=
|unit=
|battles=
|awards= Army Distinguished Service Medal
Defense Superior Service Medal
Legion of Merit (2)
Bronze Star
Meritorious Service Medal (8)
Army Commendation Medal (8)
Army Achievement Medal (2)
|relations=
|laterwork=