Flag of the Norman Empire.
In a stroke of almost total coincidence, the first human settlers in the Norma Arm of the Milky Way galaxy were, in fact, Normans.
In 2552, a group of around 800,000 Terran colonists and explorers primarily of French and Anglo descent began founding colonies in the Norma Arm, also referred to as the Norma Spur, in a planetary-dense region adjacent to the Carina Arm. The leading organizer and financier, Richard Fitzwilliam de Bray, was granted a charter by the Terran Dominion to be Lord Protector of the colonies of the region. It was hoped on Earth that Terran expansion into Norma would provide a check on Soviet and Orionese expansion in nearby regions. However, they had greatly underestimated de Bray's ambitious nature; by 2560, he had convinced the colonies under his protection to form an independent stellar nation. Declaring themselves the Norman Empire, the colonies peaceably separated from the Terran Dominion, with de Bray elected Emperor Richard I. The Normans remained tacitly neutral for around fifty years, but eventually entered into a military alliance with the Terran Empire.
The Normans did not have a national flag for the several decades of its existence. The constituent colonies preferred to use their own regional flags in conjunction with the royal standard. But in 2611, a national flag was established by law, partly due to a national unity movement following the detente with the Terran Empire. It consists of a blue field, with a white triangle in which is set the twin lions of Normandy; from this wedge emanates two sprouts of four stars each, representing the first eight hundred thousand settlers. Many of these first colonists became the core military aristocracy of landed gentry and officers, and were given control over vast estates on the garden worlds of the Norma Arm. Even among the parliamentary, semi-feudal monarchies that made up the Terran alliance, the Normans were renowned as among the most traditionalist and manorial.