Is it wrong for the K.P.A. to enter the dungeon?

Colonel Chang Min-Ho is an officer at the Korean People's Army Ground Force and commanding officer of the III corps at the South Pyongan province, the only corps in the K.P.A. equipped with the most advanced equipment and weapons showcased in 2020.
One day, during a training exercise, Chang receives an order from the Pyongyang defense command to investigate a mysterious anomaly at the Paektusan mountains.
As soon as their trucks enter the cave on the mountain, the entire unit is caught in the anomaly and disappears from the face of the earth. What nobody knows, is that the enitre platoon and their trucks have been transported in a fantasy world where magic, dragons and other creatures are all real, the same world where Bell Cranel has been fighting as a member of Hestia's familia.
How will the locals react to the presence of modern troops? Will the North Koreans join the Hestia familia and become valuable allies in this war?

A/N: I own nothing except my OCs, everything else belongs to its respective owners.