the Portuguese autonomous regions were implemented. They established their own heraldry, case by case by the regions' own governing bodies within the scope of their developed powers, not following any specific standards besides the general rules of heraldry. Both the regional achievement of arms of the Azores and that of Madeira follow a model inspired by the old Portuguese royal heraldry. The shield of Madeira, together with its seal and flag, was established in 1978, but its complete achievement of arms (with the addition of supporters, motto, helmet and crest) was only established in 1991. The arms of the Azores were established in 1979, as well as their seal and flag. Before that, however, an heraldic charge identifying Azores (a flying goshawk (açor) or with a quina in its claws) was already in use, inserted in the chief of the coats of arms of many municipalities of the Region. Besides the two autonomous regions, the region of the Algarve, although not existing as a legal personality, is also occasionally collectively identified by a coat of arms: the putative coat of arms of the ancient honorary Kingdom of the Algarve, consisting of a quarterly shield, with the head of a Christian king in the I and IV, and the head of a Moor in the II and III. The fields of the I and IV are usually represented in or and those of the II and III in gules, although variations occur. Elements of this coat of arms were included in the arms of most of the Algarve municipalities (usually the Christian king and Moor heads in the chief). Some regional and local organizations also use the Algarve coat of arms or include elements of it in their own emblems. Military heraldry Military heraldry is the youngest branch of Portuguese heraldry. Each branch of the Armed Forces and the Republican National Guard (GNR) has its own system of heraldry, that also includes their heraldic vexillology. Before the 20th century, the Portuguese military made only rare use of heraldry, besides use of the royal and national coats of arms. In contrast with the usage of other militaries, even the use of particular badges, insignia or mottos was rare in the Portuguese military units. In the late 1920s, the Portuguese Army started a policy of reviving its units' historical traditions. As part of its policy, mottos were introduced for some units in the