The state and war flags and ensigns of Spain must be charged with the Spanish coat of arms. The current coat of arms on the Spanish flag was adopted on December 19, 1981, when it replaced the model of 1977. Each of the four quadrants on the coat of arms represent one of the four kingdoms that were merged to form a unified Spain at the end of the 15th century. Namely, the kingdoms are: Castile, represented by the castle, León, represented by the lion, Aragon, represented by the vertical alternating red and yellow stripes (four red stripes, five yellow stripes), and Navarre, represented by the linked chains. Also the Moorish kingdom of Granada is represented by the pomegranate fruit in the bottom of the coat of arms.