field manual Regulations for correspondents accompanying U.S. Army forces in the field / prepared under direction of the Chief of Staff field manual Regulations for technical observers and service specialists accompagny U.S. Army forces in the field This is Erie proving ground / U.S. Army test and evaluation command united states army in the korean conflict Combat support in Korea / John G. Westover U.S. army : facts and insignia : how to recognize rank and service in the army of the United States / V. Paulsen monograph series on the american military participation in the world war genesis of the American First Army ... / Prepared in the Historical Section, Army War College, August, 1928 illustrated reference guides for collectors U.S. Army cloth insignia : 1941 to the present : an illustrated reference guide for collectors / Brian L. Davis Leader's handbook / publ. at the US Army Infantry School U.S. Army in the World War 1917-1919 : 10 U.S. Army in the World War 1917-1919 : 11 U.S. Army in the World War 1917-1919 : 12 U.S. Army in the World War 1917-1919 : 13