This template contains four parameters: article, url, author, and accessdate, describing the article at the US Army Institute of Heraldry website from which information in the wiki page was obtained. It can be used with none, 2, 3, or all 4 parameters, as follows:
{{AIOH | article=From the Director | url=http://www.tioh.hqda.pentagon.mil/TIOH/director.aspx | author=Office of the Administrative Assistant to the Secretary of the Army}}
{{AIOH | article=From the Director | url=http://www.tioh.hqda.pentagon.mil/TIOH/director.aspx | author=Office of the Administrative Assistant to the Secretary of the Army | accessdate=2010-12-22}}