The Netherlands were forced to pick a side, and the Nordic Federation wasn't much better off. Although their nation's foundation was somewhat stronger, it all depended on whom they were compared to.
All the countries on the European continent had been pulled onto the war chariot by the Vienna Government, and even if the Nordic Federation could maintain neutrality, they would still have to consider the repercussions after the fact!
The idea of retreating to the mountains to wage guerrilla warfare was just lip service. Who would abandon a comfortable life to crawl through the mountains and ravines?
Besides, even if they were to take to the mountains, they would need mountains to begin with. Norway and Sweden indeed had the terrain to stage a war of attrition, but Denmark did not!
The entirely flat Jutland Peninsula lacked the conditions for a prolonged defense. We could look to World War II as an example, where the battle ended in merely four hours.
