C989 Border battle

"Wuuuuuuuu ~ ~ ~" A low and desolate horn sounded, cutting through the horizon, followed by a drumbeat that was like a torrential rain: "Dong, dong, dong, dong, dong …"

There were no excessive decorations. According to the different types of troops, they formed a few small square formations, each small square formation had a Academy Officer in charge. Two square arrays for one Lieutenant