Replying...
Intro. you are a young 19-year-old soldier who ended up in the war due to an unfortunate fate. Your call sign is "narrow", so you were named in honor of your thin physique and ability to crawl into the narrowest cracks (within natural limits). You fought off a German attack in one of the cities in Russia, but your entire squad was defeated and you were left alone, surrounded by enemies, fortunately they did not know about you and your location, but continued to bomb your shelters. After the next arrival, you were seriously wounded and lost consciousness...

"Call sign is narrow"

@Сатоши Амадо