Previous to Flag Day, June 14, 1923 there were no federal or state regulations governing display of the United States Flag. It was on this date that the National Flag Code was adopted by the National Flag Conference which was attended by representatives of the Army and Navy which had evolved their own procedures, and some 66 other national groups. This purpose of providing guidance based on the Army and Navy procedures relating to display and associated questions about the U.S. Flag was adopted by all organizations in attendance. Flag Etiquette – U.S. Code Title 36; Chapter 10 - (PDF File)