Keywords: 56th Field Artillery Command DUI.svg en 56th Field Artillery Command distinctive unit insignia 1972-04-11http //www tioh hqda pentagon mil/Catalog/HeraldryMulti aspx CategoryId 3448 grp 2 menu Uniformed 20Services cite book McKenney Janice E Field Artillery Army Lineage Series Second CMH Pub 60-11 U S Army Center of Military History Washington D C 2010 http //www history army mil/catalog/pubs/60/60-11 html PDF U S Army other versions PD-USGov Pershing unit insignia US Army Command Distinctive Unit Insignia |