A flag is a piece of fabric with distinctive colours and design. It is used as a symbol, a signalling device, or for decoration. The term flag is also used to refer to the graphic design employed, and flags have evolved into a general tool for rudimentary signalling and identification, especially in environments where communication is challenging. Many flags fall into groups of similar designs called flag families. The study of flags is known as "vexillology" from the Latin vexillum, meaning "flag" or "banner".
A national flag is a flag that represents and symbolizes a given nation. It is flown by the government of that nation, but can also be flown by its citizens. A national flag is typically designed with specific meanings for its colours and symbols, which may also be used separately from the flag as a symbol of the nation. The design of a national flag is sometimes altered after the occurrence of important historical events.
The Union Jack or Union Flag is the de facto national flag of the United Kingdom. The Union Jack was also used as the official flag of several British colonies and dominions before they adopted their own national flags. The flag continues to have official status in Canada, by parliamentary resolution, where it is known as the Royal Union Flag. However, it is commonly referred to in Canada as the Union Jack.
The national flag of Sweden consists of a yellow or gold Nordic cross on a field of light blue. The Nordic cross design traditionally represents Christianity. The design and colours of the Swedish flag are believed to have been inspired by the present coat of arms of Sweden of 1442, which is blue divided quarterly by a cross pattée of gold. Blue and yellow have been used as Swedish colours at least since Magnus III's royal coat of arms of 1275.
The national flag of Romania is a tricolour featuring three equal vertical bands colored blue, yellow and red, with a width to length ratio of 2:3.
Flag terminology is the nomenclature, or system of terms, used in vexillology, the study of flags, to describe precisely the parts, patterns, and other attributes of flags and their display.
The national flag of Greece, popularly referred to as the Blue-and-White or the Cyan-and-White, is officially recognised by Greece as one of its national symbols and has 5 equal horizontal stripes of blue alternating with white. There is a blue canton in the upper hoist-side corner bearing a white cross; the cross symbolises Eastern Orthodox Christianity. The blazon of the flag is Azure, four bars Argent; on a canton of the field a Greek cross throughout of the second. The official flag ratio is 2:3. The shade of blue used in the flag has varied throughout its history, from light blue to dark blue, the latter being increasingly used since the late 1960s. It was officially adopted by the First National Assembly at Epidaurus on 13 January 1822.
The flag of New Zealand, also known as the New Zealand Ensign, is based on the British maritime Blue Ensign – a blue field with the Union Jack in the canton or upper hoist corner – augmented or defaced with four red stars centred within four white stars, representing the Southern Cross constellation.
The national flag of the Portuguese Republic, often referred to as the Portuguese flag consists of a rectangular bicolour with a field divided into green on the hoist, and red on the fly. A lesser version of the country’s national coat of arms stands in the middle of the Portuguese armillary sphere and shield, centered over the colour boundary at equal distance. The flag was announced in 1910, following the 5 October 1910 revolution, inspired by the colours of the Republican Party and the design of radical conspiratorial society Carbonária.
The flag of Iceland was officially described in Law No. 34, set out on 17 June 1944, the day Iceland became a republic. The law is entitled "The Law of the National Flag of Icelanders and the State Arms" and describes the Icelandic flag as follows:
The national flag of Lithuania consists of a horizontal tricolour of yellow, green, and red. It was adopted on 25 April 1918 during Lithuania's first period of independence (1918–1940), which ceased with the occupation first by the Soviet Union, and then by Nazi Germany (1941–1944). During the post-World War II Soviet occupation, from 1945 until 1988, the Flag of the Lithuanian SSR consisted first of a generic red Soviet flag with the name of the republic, in 1953 that was changed to the red flag with white and green bands at the bottom.
The flag of Spain, as it is defined in the Constitution of 1978, consists of three horizontal stripes: red, yellow and red, the yellow stripe being twice the height of each red stripe. Traditionally, the middle stripe was defined by the more archaic term of gualda, and hence the popular name la Rojigualda (red-weld). That middle stripe bears the Coat of Arms.
The national flag of Ukraine consists of equally sized horizontal bands of blue and yellow.
A maritime flag is a flag designated for use on ships, boats, and other watercraft. Naval flags are considered important at sea and the rules and regulations for the flying of flags are strictly enforced. The flag flown is related to the country of registration: so much so that the word "flag" is often used symbolically as a metonym for "country of registration".
The national flag of India, colloquially called Tiraṅgā, is a horizontal rectangular tricolour flag, the colours being of India saffron, white and India green; with the Ashoka Chakra, a 24-spoke wheel, in navy blue at its centre. It was adopted in its present form during a meeting of the Constituent Assembly held on 22 July 1947, and it became the official flag of the Union of India on 15 August 1947. The flag was subsequently retained as that of the Republic of India. In India, the term "tricolour" almost always refers to the Indian national flag.
In military organizations, the practice of carrying colours, standards, flags, or guidons, both to act as a rallying point for troops and to mark the location of the commander, is thought to have originated in Ancient Egypt some 5,000 years ago. The Roman Empire also made battle standards reading SPQR a part of their vast armies. It was formalized in the armies of Europe in the High Middle Ages, with standards being emblazoned with the commander's coat of arms.
A pennon, also known as a pennant or pendant, is a long narrow flag which is larger at the hoist than at the fly, i.e., the flag narrows as it moves away from the flagpole. It can have several shapes, such as triangular, tapering or triangular swallowtail, etc. In maritime use, pennants are to be hung from the main truck.
A Nordic cross flag is a flag bearing the design of the Nordic or Scandinavian cross, a cross symbol in a rectangular field, with the centre of the cross shifted towards the hoist.
A French ensign is the flag flown at sea to identify a vessel as French. Several such ensigns have existed over the years as well as terrestrial flags based on the ensign motif.
The flag of the Swedish-speaking Finns is an unofficial red flag with a yellow cross used in the Swedish-speaking parts of Finland to represent the Finland-Swedes. It may be flown in addition to the Finnish blue and white flag. This flag is unfamiliar to many in Finland but there have been attempts to introduce it again to a broader audience as what is known as "household pennants" demonstrating one's identity as Swedish-speaking, are more common and can be seen on many flagpoles in areas where there live many Swedish-speaking Finns, especially in countryside.
