When the original homeland fell to the Neuroi in 1940, the Operation Bifrost was implemented to systematically evacuate the population to the South Liberion continent. The resulting large-scale, hellish evacuation war sacrificed the defense forces from various places. However, thanks to this sacrifice, the political core and most of the industry was successfully moved to Neue Karlsland. Not only the imperial house, but countless citizens and engineers were evacuated to the new mainland.
- Though originally colonized by the Spanish and Portuguese, places such as Argentina, Uruguay, Chile and southern Brazil were settled by a variety of people, including a substantial number of Germans.
- Although the name "Neue Karlsland" is established in various pieces of source material, it's actually a misnomer. In proper German, the term would be "Neukarlsland", similar to e.g. "Neukaledonien" or "Neuschwabenland".
- Also of interesting note is in the Strike Witches Official Fan Book's world atlas the world map spells the country as Noue Karlsland; also likely a misnomer, though it's spelling takes origin from the French Noue in reference to a specific style of architecture.