This is how real the war is in Europe:

Denmark has called up its young women for mandatory military training and is now in the process of expanding it's navy with

— 6 additional armed frigates for The Danish Navy
— 5 Arctic patrol ships
— 21 patrol ships for The Marine Home Guard
— 4 sea surveillance ships with sea mine laying capability
— 1 underwater surveillance vessel
— underwater drones

This is in a country of just 5.9 million.