Transmigrating into the role of the commander of the New First Regiment in northern Shanxi, Li Yunlong takes charge in a time of crisis with the "Anti-Japanese War Ironblood System." He leads a breakout at Heifeng Pass to steady the troops, establishes a base in Wolf Valley, and repeatedly defeats the Japanese using sparrow tactics and encirclement-and-relief ambushes. When he encounters Yamamoto's special forces, he recreates the classic counterattack from Drawing Sword and wipes them out. He captures county seats and clears out the remaining enemy forces, expanding his unit from a 500-man squad into a 50,000-strong anti-Japanese column. Coordinating infantry, artillery, and tanks, he sweeps the Japanese forces from Shanxi and builds an ironclad line of resistance through the united efforts of soldiers and civilians, writing an ironblood legend of a rise from humble regimental commander to renowned anti-Japanese general amid the flames of war!