FERT is themotto of the royalHouse of Savoy andKingdom of Italy. The motto^[1] was adopted by DukeVittorio Amedeo II (1666–1732).^[2]

It appeared for the first time on the collar of theSupreme Order of the Most Holy Annunciation, orOrdine Supremo della Santissima Annunziata, the primary dynastic order of the kingdom.^[3]

The meaning of the letters has been a matter of some controversy, to which a number of interpretations have been offered. The motto is believed to be anacronym of:^[4]

• Foedere et Religione Tenemur (Latin: "Treaty and religion bind us");
• Fortitudo Eius Rhodum Tenuit (Latin: "His strength conquered Rhodes" or "By his bravery he held [or occupied] Rhodes"), referring to the victory ofAmadeus V, Count of Savoy (1249–1323), who fought in the1315 siege of Rhodes;^[2] or either
• Fortitudo Eius Rempublicam Tenet (Latin: "His bravery [or strength] preserves [or defends] the state"); or
• Fides Est Regni Tutela (Latin: "Faith is the protector of [our] Kingdom").

• 
  Stained glass with the coat ofAmadeus VIII, Duke of Savoy
• 
  The motto in the main hall of thePalace of the Grand Master of the Knights of Rhodes
• 
  Flag of theItalian Protectorate of Albania

• A.E.I.O.U. – motto of theHouse of Habsburg whose precise meaning and origin is unclear

• House of Savoy
• Initialisms
• National symbols of Italy
• National mottos
• Mottoes of orders of chivalry
• Latin mottos

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• Short description matches Wikidata
• Articles containing Latin-language text