Wednesday, March 1, 2017

Usage

There are three distinct types of national flag for use on land, and three for use at sea, though many countries use identical designs for several (and sometimes all) of these types of flag.

On land

Flag of the Republic of China.svg
The Flag of the Republic of China
People's Liberation Army Flag of the People's Republic of China.svg
The People's Liberation Army Flag of the People's Republic of China.
War Flag of the Philippines.svg
The Philippines' national flag is the only flag which may be hoisted inverted when the Congress of the Philippines has declared a "state of war".
On land, there is a distinction between civil flags (FIAV symbol FIAV 100000.svg), state flags (FIAV 010000.svg), and war or military flags (FIAV 001000.svg). State flags are those used officially by government agencies, whereas civil flags may be flown by anyone regardless of whether they are linked to government. War flags (also called military flags) are used by military organisations such as Armies, Marine Corps, or Air Forces.
In practice, many countries (such as the United States and the United Kingdom) have identical flags for these three purposes; national flag is sometimes used as a vexillological term to refer to such a three-purpose flag (FIAV 111000.svg). In a number of countries, however, and notably those in Latin America, there is a distinct difference between civil and state flags. In most cases, the civil flag is a simplified version of the state flag, with the difference often being the presence of a coat of arms on the state flag that is absent from the civil flag.
Very few countries use a war flag that differs from the state flag. The People's Republic of China, the Republic of China (Taiwan), and Japan are notable examples of this. Swallow-tailed flags are used as war flags and naval ensigns in Nordic countries and charged versions as presidential or royal standards. The Philippines does not have a distinctive war flag in this usual sense, but the flag of the Philippines is legally unique in that it is flown with the red stripe on top when the country is in a state of war, rather than the conventional blue.

At sea

Naval Ensign of Japan.svg
The naval ensign of Japan.
The flag that indicates nationality on a ship is called an ensign. As with the national flags, there are three varieties: the civil ensign (FIAV 000100.svg), flown by private vessels; state ensigns (also called government ensigns; FIAV 000010.svg), flown by government ships; and war ensigns (also called naval ensigns; FIAV 000001.svg), flown by naval vessels. The ensign is flown from an ensign-staff at the stern of the ship, or from a gaff when underway. Both these positions are superior to any other on the ship, even though the masthead is higher. In the absence of a gaff the ensign may be flown from the yardarm. (See Maritime flags.) National flags may also be flown by aircraft and the land vehicles of important officials. In the case of aircraft, those flags are usually painted on, and those are usually to be painted on in the position as if they were blowing in the wind.
In some countries, such as the United States and Canada (except for the Royal Canadian Navy's Ensign), the national ensign is identical to the national flag, while in others, such as the United Kingdom and Japan, there are specific ensigns for maritime use. Most countries do not have a separate state ensign, although the United Kingdom is a rare exception, in having a red ensign for civil use, a white ensign as its naval ensign, and a blue ensign for government non-military vessels.

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