Texas This category is for Military units and formations established in the 1540s. 1490s1500s1510s1520s1530s1540s1550s1560s1570s1580s1590s 11th12th13th14th15th16th17th18th19th20th21st See also: Category:Military units and formations disestablished in the 16th century Subcategories This category has only the following subcategory. 0–9 Military units and formations established in 1543 (1 P)