You Start with a Pair of Pants, and All the Equipment Depends on Rubbing

I, He Ping'an, was a deserter after being defeated. Aliens captured half of the earth, and China was also attacked by the ferocious Grays. I joined the Guards with my ideals, but I didn't expect to be defeated every time. Later, I lived in a small town on the border and lived a stable life for a few days, but I was still reorganized into the army and sent to the Nansha Islands to stop the Grays from moving north. Our transport plane was shot down on the way, and when it landed, only a few dozen of us were left, with only one pair of underwear on us. On the way being chased by the Grays, we met a man who claimed to be our captain. Can we follow him back to the mainland? Who is his identity... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.