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# Dictionary of Vexillology: F (F Cross – Fastness)

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Last modified: 2026-04-04 by martin karner
Keywords: vexillological terms |
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On this page:

- 'F' CROSS
- FACETED
- FACING COLOUR (or FACINGS)
- FAKE FLAG
- FALLING DIAGONAL
- FALSE COLOURS (or COLORS)
- FALSE FLAG (or ENSIGN)
- FAN
- FAN’S FLAG/PENNANT
- FANE
- FANION
- FANNELL
- FANO
- FANTASY FLAG
- FASCES
- FASTNESS

'F' CROSS
  See one-and-a-half armed cross.

  Flag and Arms of Kobylin-Borzymy, Poland

FACETED
  The term which may be used to describe a charge (such as a compass rose, cross, star or sun) that is given a three-dimensional appearance by the use of contrasting colours or of simple construction lines – a sectored cross/star gyronny (see also caltrap, counterchanged, cross gyronny, sector(s) 1), sectored 2)).

  State Ensign of Singapore and Enlarged Detail (fotw and CS); House Flag of Stern und Kreis, Germany

FACING COLOUR (or FACINGS)
  The terms for that practice, now obsolete, of showing a contrasting shade on the lapels, cuffs and tails (the turnbacks) of military uniforms, and in UK usage largely corresponding to the background of their respective regimental colour – facings – see colour 2) and buff.

  Colours of the 9th Regiment of Foot 1757; Soldier of the 16th Regiment of Foot, UK (meisterdrucke.com); Colours of the 9th Regiment of Foot 1807, UK

FAKE FLAG
  1) An imprecise term sometimes (incorrectly) used for an erroneously reported flag instead of the precise terms fictional or fictitious flag – see fictional flag, fictitious flag (also flagoid).
  2) See false flag 1)

  Please note that this term may be considered as a logical impossibility since any flag, or depiction of a flag, whether fictional or fictitious, remains a flag whatever its real status as long as it meets the basic definition of flag as given herein.

FALLING DIAGONAL
  See descending diagonal.

  Flag of Hove, Belgium

FALSE COLOURS (or COLORS)
  An ensign or other flag displayed by a vessel not entitled to it, and usually (but not invariably) employed by warships as a ruse de guerre (see also colours 4) and false flag 1) below).

  Notes
  a) This practice is considered perfectly acceptable providing the correct ensign is raised before the commencement of hostilities.
  b) The French phrase "ruse de guerre" – literally translated as trick of war – means an action designed to delude an enemy as to one's identity and/or intentions.

FALSE FLAG (or ENSIGN)
  1) The term which may be used for a flag or ensign that is made to resemble an established or historic design in order to deceive the observer, either as to origins of the flag itself, or the identity of those displaying it (see also flag of pretence 1)).
  2) See false colours above.

FAN
  A semi-circular patriotic decoration in bunting, usually (but not invariably) of flag design and/or colours – a swag (see also bunting 2) and mourning bunting).

FAN’S FLAG/PENNANT
  See sports flag 2).

  Fan's Flag, Liverpool Football Club, UK; Fan's Yacht Pennant, Atlanta Braves Baseball Club, US

FANE
  1) A medieval generic term, now obsolete, for any flag, banner or pennant (see also vane and its following note).
  2) In Danish usage, a term that may be employed to describe flags (either military or civilian) carried in a parade situation (see also colour 2), parade flag).

  Lance Pennon of Sir Robert Knolles, Knight Banneret c1360, England; Military Colour, Denmark

  Please note the similarity between this term and the German "Fahne" for flag.

FANION
  1) A small bicolour used for marking a position in surveying (see also bicolour).
  2) A small flag or pennant that is used on military vehicles for marker purposes – a vehicular or convoy flag (see also pennant and regimental colours 2)).
  3) In French military/naval usage, a small flag issued at company (unit or squadron) level and originally employed as markers, for signal purposes or as camp colours, but which have acquired an additional ceremonial role (see also camp colour 1), camp colour 3), cravat, jack of honour, lanyard pennant).

  Three Fanions/Convoy Flags According to NATO Regulations

  Please note that usage 2) is a direct descendent of the flag formerly carried at the head of an army baggage train.

FANNELL
  A term, now obsolete, and the equivalent of a vexillum or banner.

FANO
  A term, now obsolete, for a small flag on a ship (see also fane).

FANTASY FLAG
  See fictional flag.

  Flag of the Klingon Empire from the TV Series "Deep Space Nine"

FASCES
  An Ancient Roman symbol of power and law which consists of a bundle of rods tied around an axe.

  Flag of Sankt Gallen canton, Switzerland; Flag of the Italian Social Republic (1943–1945), Italy; Flag of the Helvetic Legion c1800, Switzerland

FASTNESS
  A term – often divided into lightfastness and washfastness – used to describe the ability of a fabric (and of its dye) to maintain its original colour and intensity, thus a determining factor in calculating the life of an outdoor flag.

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