Several sets of codes and abbreviations are used to represent the political divisions of the United States for postal addresses, data processing, general abbreviations, and other purposes.
The United States Navy, like any organization, produces its own acronyms and abbreviations, which often come to have meaning beyond their bare expansions. United States Navy personnel sometimes colloquially refer to these as NAVSpeak. Like other organizational colloquialisms, their use often creates or reinforces a sense of esprit and closeness within the organization.
Because of the large number of universities and colleges in the United States, and in some cases because of their lengthy formal names, it is common to abbreviate their names in everyday usage. Most simply, the type of institution, such as "University" or "College," in the name may be dropped, or some component of the name abbreviated, such as "Tech" in place of "Institute of Technology" or "Technological University." The same nickname may apply to multiple institutions, especially in different regions – e.g., "SC" is claimed by both the University of Southern California and the University ...
List of military tombstone abbreviations
58 PENN. INF. = 58th Regiment of the Pennsylvania Infantry Volunteers. 185 N.Y. INF. = 185th Regiment of the New York Infantry Volunteers.