After high School I joined the army and before I knew it I was in basic at Fort Dix. I had never had a sexual experience other than feeling up a girl I dated back home. I did notice I was checking the other guys out in the shower before we hit our bunks and lights out. At night just a small amount of light would be visible in the room from the lights in the bathroom at the end of the hall. I was in a 8 man room and at night you could hear the other guys beating off. One guy in the bunk across from mine threw his covers off and just went for it. I could see him in the dim light as he beat on his cock and would arch up in the air as he shot. It made me hard watching him but still had no clue why.
When ever we had to be transported from one place to the other we either marched or would be piled into what they called cattle trailers. They would pack us in like sardines all pressed up against each other. The one trip to the riffle range was long and bumpy. I noticed the guy behind me had pressed his hard cock against my ass and was humping it I could not move we were jammed in there so tight. Each bump his cock slammed against my ass. We had on our PT physical training clothing on just shorts t-shirts and running shoes. I felt him tugging at my shorts and soon felt his cock on my bare ass. We would change into our uniforms once at the range because we were running late. So there I am trapped and feeling this guys cock sliding between my ass cheeks. He did not fuck me just used the wet sweat of my crack to cradle his cock as he humped me. Soon I felt something warm and wet running down my back and buttocks. He did not even pull my shorts up I was shocked about what had happened but in some ways aroused. I was not even sure who it was as I could not turn around to see. Once we got to our destination I was able to pull up my shorts. Once out of trailer we got our gear and changed right out in the open. No time to think as the Drill was yelling and telling us to move and how worthless we were. As I slipped my shorts off there was a ton of evidence the back of my shorts were soaked.
Later after a long day at the range we were loaded back up in the cattle trailers and packed in like sardines again. I heard some guys laughing and saying really you just used him and shot on his ass. I became afraid hearing this I thought no one would know. I had made sure once in cattle trailer to be up against the wall. On this trip I felt a hand on my crotch and once again my clothing being pulled down I was in my BDU uniform I then felt something warm and wet on my cock I was pinned against the wall by other sweaty guys some standing up sleeping. My cock got hard and the wet warmth kept up. I shot my cum and heard someone groan and say thanks. I reached down to feel a shaved head bobbing on my cock as I let my cock unload. I was able to get my BDU pants back up before we got back to barracks. I never knew who it was who used my ass to jerk off or who sucked me off. God I have never told about that to anyone.