The Order of Civil and Military Merit of Adolph of Nassau () is an order of merit of the Grand Duchy of Luxembourg for meritorious service to the Grand Duke, the Grand-Ducal House and Luxembourg. It was founded in 1858 as a chivalric order of the Duchy of Nassau by Adolphe of Nassau in honor of his namesake and ancestor, Adolf, Count of Nassau, the only member of the House of Nassau to have been Roman King of Germany. After the Duchy of Nassau was annexed by Prussia in 1866 and Adolphe became Grand Duke of Luxembourg in 1890, he revived the order as an order of merit. Grades The order consists of eight grades, with two crosses and three medals attached to the order: Grand Cross - wears the badge with a crown on a sash on the right shoulder, and the plaque on the left chest (unlike the civil version, the military version of the Grand Cross bears two swords on its badge and plaque); Grand Officer - wears the badge with a crown on a necklet, and the plaque on the left chest; Commander of the Crown - wears the badge with a crown on a necklet; Commander (male) / Cross of Honour for Ladies (female) - men wear the badge on a necklet; women wear the badge with a crown on a ribbon tied as a bow at the left chest (the crown of the Cross of Honour for Ladies is slightly smaller and the sash slightly different from that of the Commander of the Crown, and the badge bears four letters on the outside); Officer of the Crown - wears the badge with a crown on a chest ribbon with rosette on the left chest; Officer - wears the badge on a chest ribbon with rosette on the left chest; Knight of the Crown - wears the badge with a crown on a chest ribbon on the left chest; Knight - wears the badge on a chest ribbon on the left chest; Members of the order belong to either the Civil or the Military Division. The Grand Duke of Luxembourg is the Grand Master of the order. Attached to the order are the following crosses and medals of merit: Crosses in Gold and Silver - wears the cross on a ribbon on the left chest; Medals in Gold, Silver and Bronze - wears the medal