The U.S. Army was founded on June 14, 1775, when the Continental Congress authorized enlistment of riflemen to serve the United Colonies for one year. For more on the history of the U.S. Army birthday, click here: the Army birthday.
Directory publishing is a specialized genre within the publishing industry. These publishers produce mailing lists, telephone books, and other types of directories. With the advent of the Internet, many of these directories are now online.
Nominally, periodical publishing involves publications that appear in a new edition on a regular schedule. Newspapers and magazines are both periodicals, but within the industry, the periodical publishing is frequently considered a separate branch that includes magazines and even academic journals, but not newspapers.