Real y Militar Orden de San Hermenegildo
Instituted: 28 November 1814 and continued with minor revisions to the present day.
Awarded: To all ranks of the armed forces and civil guard for faithful service.
Grades: Now 4 (Grand Cross, Star, Commander and Knight), the Commander grade being added since the order's inception.
Apart from changes to the crown, the insignia has changed little if at all since 1814.
Here is some of the current insignia, according to the latest revision of the statutes in 2000.
Grand Cross: Badge