Vexillology (from the Latin vexillum, a flag or banner) is the scholarly study of flags, including the creation and development of a body of knowledge about flags of all types, their forms and functions, and of scientific theories and principles based on that knowledge. Flags were originally used to assist military coordination on the battlefield, and have evolved into a general tool for signalling and identification, particularly identification of countries.

Heraldry encompasses all of the duties of a herald, including the science and art of designing, displaying, describing and recording coats of arms and badges, as well as the formal ceremonies and laws that regulate the use and inheritance of arms. The origins of heraldry lie in the medieval need to distinguish participants in battles or jousts, whose faces were hidden by steel helmets.

Swedish heraldry refers to the cultural tradition and style of heraldic achievements in modern and historic Sweden. It belongs culturally to the German-Nordic heraldic tradition, noted for its multiple helmets and crests which are treated as inseparable from the shield, repetition of colours and charges between the shield and the crest, and its scant use of heraldic furs. Swedish heraldry is similar to Danish heraldry; both were heavily influenced by German heraldry. The medieval history of the Nordic countries was closely related, so they developed their heraldic individuality rather late. Swedish and Finnish heraldry have a shared history prior to the Diet of Porvoo in 1809. Unlike the macaronic and highly stylized English blazon, Swedish heraldry is described in plain language, using only Swedish terminology.

In Sweden today, the official coats of arms of corporations and government offices are protected by Swedish law, if the coat of arms is registered with the Swedish Patent and Registration Office. Heraldic arms of common citizens (burgher arms), however, are less strictly controlled; these are recognised by inclusion in the annually published Scandinavian Roll of Arms. (more...)

In Article 18 of the Law on the National Arms, Flag, and Anthem (Ley Sobre El Escudo, la Bandera y el Himno Nacionales) there is a listing of dates that the Mexican flag is flown by all branches of government. Civilians are also encouraged to display the national flag on these days. Many of the dates listed in the law denote significant events and people that shaped of Mexican identity and the course of its History. Some of the holidays and commemorations listed require the flag to be flown at half-staff. The national flag can be flown any day of the year by civilians or at festive occasions in persurrence to Article 15 of the Law on the National Arms, Flag, and Anthem. (more...)

Emilio Aguinaldo y Famy (March 22, 1869 – February 6, 1964) was a Filipino general, politician, and independence leader. He played an instrumental role in Philippine independence during the Philippine Revolution against Spain and the Philippine–American War that resisted American occupation. He designed the flag of the Philippines. (more...)