Rebirth of Doomsday: Iron-Blooded Guards

In my previous life, I was the commander of the special operations company of the Southeast Military Region. In the last ten years, a wave of zombies besieged the city, alien beasts cracked the earth, all comrades died in battle, lovers died in the line of duty, and the base fell. When I ran out of ammunition and food, I fired the grenade and died together with the enemy. As soon as I opened my eyes, I was transported back to three months before the apocalypse broke out. The camouflage remains, and the military spirit remains. In this life, I abandon kindness, stick to the bottom line, strengthen my troops, hoard tens of thousands of war supplies, and transform the copper-walled and iron-walled military fortress. Eliminate the traitors inside, kill the tide of corpses outside, hunt down strange beasts, and sweep away the rebels. With ten years of apocalyptic experience as the blade, the iron-blooded military soul as the armor. Guard the military camp, protect your brothers, and guard the lights of thousands of families. The end is coming? I'm here, the defense line is there! The last steel fortress of mankind will never fall!