"We are no longer Felkhath, Feroian, FurthestNorthEastArlingPeopleNameHere. We are all Thydian, and we must be Thydian first."High King Magnus the Red-Eyed began the practice of moving City Guardsmen to other cities and Arlings, claiming it would aide in preventing corruption from growing.
Instead of ending corruption, some disgruntled officers instead choose to make their lives easier for themselves until they are reassigned back towards a more favorable posting. Most reassignments are volunteer-based, but without say in where the guards are reassigned.
With the Thydian Civil War in effect, many City Guards across Theydim have deserted their assigned cities, while other "transplanted" guards stayed with their city.
"I may be SouthEastArlingPeopleNameHere, but Port Frostfind is where I live now. I met my wife here. Our children were born here."
"CityNameHere doesn't need me, the people don't want me here, why should I stay? EastLeader PersonBro is not my High King. I already have my replacement here, ready for me to leave."