As everyone can tell from my user name, I am a Marine. These stories occurred while I was going through Boot Camp in sunny California. And in case your wondering, I didn't get to enjoy any of it! While in boot camp we lived in long open squad bays that had an entrance to the head and and shower rooms at the front and a single back hatch that was never opened.
Part of the training that we went through involved standing watch by the front hatch. This watch was posted starting as soon as the lights went out at 10:00 pm and went in shifts until 5:00 am when everyone had to get up. It is easy to understand that on a military base where the recruits are miserable and a very small minority just lose it and decide to end it all, that some "interesting" things can happen while standing post particularly late at night.
The first incident I experienced occurred around 2:30 in the morning. I was touring the squad bay as ordered to keep an eye out for any of the recruits violating the rules or any recruit that might be trying to harm himself or others for some reason. When touring the head I heard a strange noise coming from one of the back stalls in the restroom. The stalls in boot camp didn't have any doors on them so it was easy to see that there was no one back there. I turned to leave when I heard it again, it sounded like something was rubbing on that top bar that runs across the front of a line of stalls.
Of course I ran back to look again but there was nothing there! Slightly on edge because I took my duty seriously and something was giving me a strange feeling every time I went in to that room I went and woke my relief. He claimed to be "tuned" to the paranormal. He heard the same sounds and said he felt something was wrong about that room. Later after graduation we asked our instructors and were told that 40 odd years before a recruit had hung himself in that exact stall!
The second incident that I experienced occurred while on duty in the last couple weeks of boot camp in the newer 3rd phase squad bay. I was walking towards the front of the squad bay when a humanoid figure comes running from the entrance to the head and straight down the center of the squad bay and in to the uniforms that we had hanging in the rear of the squad bay for inspection. I, of course, thought it was one of the recruits messing around so I chased after the figure until it went into the uniforms. I got mad thinking that the "recruit" was going to mess up the uniforms and so I started aggressively searching for him. After 15 minutes of searching through every rack of uniforms and up every single row of bunks and not seeing anyone out of their rack and all quiet is started to think that it wasn't a living human recruit after all. I never found out what or who that might have been but it was interesting to say the least.
Both of these experiences were just the start of paranormal experiences I have had while in the military. I have and quite a few for one person and I have heard even more.