100 Word Challenge Week #5

I am on my first year in the trenches. I am a fleet commander. My grandpa gave me his compass he said this could save a life. When I was in the mud an officer came tripping throw the mud. Then he said when I hear a whistle go over the top. At that moment I was terrified. But I still went there at the ladder then the whistle blew. I froze then everyone went over then I pulled out my compass I climbed up then I went prone. But then I herd  a whistle of something I looked up...