Gwaiyūgun

The Gwaiyūgun (外勇團, lit. "Foreign Brave Army"), or simply the Yūgun, is a military service branch of the Chiseian Royal Army established in 1937. Specializing in and  infantry assault, the Yūgun operates its own armoured, engineering, logistical and air units, allowing it to conduct  operations in an  role.

The Yūgun is also unique in that it accepts foreign recruits who are willing to join the Chiseian armed forces. Commanded by Chiseian officers, the unit is also open to Chiseian citizens, who amounted to 41% of the recruits in 2018. As the bulk of its personnel come from a variety of different countries and cultures, the Yūgun is known for its strict discipline, intensive training and a strong . Foreign soldiers in the Yūgun automatically become subjects after 3 years of service, and upon completing their 6 year enlistment may apply to become full citizens. Any soldier who becomes injured during a battle for Chisei will immediately receive subject status and may immediately apply to become a citizen.

Formed in 1935 by order of Marine General Isokorkur Toya in Chiseian Penemosir and Minami Imoshima, the Gwaiyūgun was an amalgamation of several separate colonial in Chiseian Osova that had been active since the 18th century and earlier, which were known as Gwaiyū (外勇), meaning 'Foreign Braves'.

At its inception it consisted almost wholly of native militiamen from the incorporated garrison forces, but a decree in 1936 which added the provision of guaranteed citizenship in exchange for voluntary service, and a vast propaganda campaign by the Kotojinso Admiralty, succeeded in vastly expanding the ranks of the service, in part through a great influx of foreign volunteers from sympathetic neutral nations. Only a year later the Army had its baptism-of-fire in the Chiseian invasion of Kita Imoshima that began the Second Escar-Varunan War. For the remainder of the war the Yūgun, fighting alongside the Royal Marines, would acquire an illustrious reputation as an Chiseian fighting force in the Crosswind Theatre, its regiments distinguishing themselves in campaigns such as those for Imoshima and Hinomoto.

In the aftermath of war, the Yūgun was reorganized and reduced in size, becoming a specialist expeditionary force. In 1958 its headquarters were moved to mainland Chisei, in response to the independence of Jyugoku, and it was placed under army command. After its participation in the First Hoaian War, the role of the unit would begin to shift from predominantly amphibious assault to and  operations. The Army would fully develop its current self-contained, combined arms structure in the course of the Kuijuan War. Since the 2000s, Yūgun soldiers have been stationed or deployed to a variety of regions, including Masuka, Dai Hoa and Jyugoku, in support of coalition and peacekeeping operations. In 2011, during the White Year, Yūgun marines were deployed to several cities in Yamatai to aid in humanitarian efforts and disaster recovery.

As of 2010, Members of the Yūgun come from over 20 different countries, but the majority are from Osova, Amphia and southern Escar.

Traditions
As the service has its roots in the Saramosiri colonies of eastern Osova, it shares many traditions with other traditionally Saramosiri military units, such as the Matangi Regiment. Gwaiyū are permitted to wear facial hair (within regulations) and traditionally grow their hair long, wearing it in. A brave who has served long enough to earn citizenship is known as a rekkoro or 'One with a Beard'. Veteran female braves are also known as rekkoro, and may their faces with stylised designs representing a beard. have been kept as by some units of the Yūgun in the past, and are featured in unit symbolism such as the badge of the 3rd Gwaiyū Regiment.

The Gwaiyū themselves also have a rich military history, with similar "foreign"/"native" militias dating back to the Five Banner Armies formed on the Uraani frontier in the 17th century. There are many instances of Uraani military terminology found in the jargon of gwaiyū units, especially in former cavalry units. A kurahu or kuraw, from Uraani khural ("meeting, assembly"), was (prior to the formalisation of the Gwaiyūgun) a gathering of braves at a local garrison to elect their officers. Since the foundation of the Gwaiyūgun, it has come to refer to veteran's organisations. Various other traditions have arisen from the mixed origins of recruits.