Flags Americans Have Saluted

This is a list of flags in the United States describing the evolution of the flag of the United States, as well as other flags used within the United States, such as the flags of governmental agencies. There are also separate flags for embassies and ships.

Since 1818, a star for each new state has been added to the flag on the Fourth of July the year immediately following admissions. When multiple states were admitted, the corresponding number of stars were added to the flag. This change has typically been the only change made with each revision of the flag since 1777, with the exception of changes in 1795 and 1818, which increased the number of stripes to 15 and then ultimately returned it to 13.  The exact pattern of stars was not specified prior to 1912, and many historical U.S. national flags (shown below)  had varied arrangements of the stars.  Wikipedia Excerpt