Reynland is the country of the Reyn and the setting of the Crimson Flag Comic. Large and varied in climate and terrain, Reynland is a feudal empire led by Queen Avelina. The entirety of the setting is based here.

Caerreyn- capital of Caerreyn and homeland of the Red Reyn The Auberwood- homeland of the Gray Reyn The Relran Tree- The chief settlement, fortress, and capital of The Auberwood Alopexia- homeland of the Snow Reyn The Southern Deserts- probable homlenad of the Fens Vandaria Shorreyn Velswornt Keep

Reynland's system of government is based on historic European feudalism and shares many similarities to it. Queen Avelina rules in the capital, Caerreyn, while individual lords control various smaller fiefs, each with its own laws and military, though still beholden to the Queen. Some lords, such as Lord Julian Urocyon of the Auberwood, are disgruntled with the Queen's rule and actively seek secession.

In addition, other actors

Like most historic feudal societies, Reynland does not maintain a nation-wide standing army, but rather exercises power through the highly structured military of Caerreyn pulled from the Queen's direct holdings. They also maintain as a royal magical organization called the Mages of Caerreyn, which is separate from the military but still act in a similar function. Feudal lords are responsible for the security of their own realms, and maintain their own separate military and mages that are beholden to their own lord before the Queen. Military technology is fairly well developed, with airships and anti-airship cannons both shown in the comic, but otherwise the military uses medieval-era equipment like swords, maces, and axes.