Soldier S01E20 - Episode 20

The Mongols attack the Cheolju Fortress. Even though the fortress has barely 2.5k men, they are able to withstand the attack of the enemy for a little over ten days. Generals Yi Won Jeung and Yi Hui Jeok, lock their families, and those of the soldiers, in a storeroom and burn it down. One of the generals gives Kim Joon his last order: go back to the capital city and report all he has seen on the front lines. The remaining soldiers of the Cheolju fortress open the gates and attack the Mongols.