To be honest, I never really believed in heaven or hell. I only believed in God, because my parents taught me that. But, all that was changed because of one letter. You see, I had a grandfather, who was a soldier in World War II. In that time, my family lived in another country. Few weeks before my grandfather went to war, he married my grandmother and she got pregnant. He got back from war wounded but with a lot of medals. In his last battle against German soldiers, he got heavily wounded, but he managed to save his and his friend's life. When he got back, he was different. In my whole life, I only saw him once, in nursing home he was in, when I was 8 years old. I remember him as a old man who was only looking at wall of his room, while sitting in his chair. He got back from war wounded with posttraumatic stress, and here is the reason. His unit was guarding one base near the German city. During one night, my grandfather's unit and few more attacked Germany's bunker. They conquered that bunker, but what they didn't knew was that german soldiers had secret communication room, under other communication room, in which were two German soldier. They notified Germany's unit in Berlin about every move that my grandfather's unit made. German started conquering other fronts on one side so my grandfather's unit totally forget about other side. Some German soldiers broke the communication in that bunker right before a battle. German started attacking bunker in which was my grandfather, around 5 am. My grandfather was sleeping when Germany's aviation started attacking that bunker. They were attacking from two sides: east and south side. My grandfather's unit was defending with everything they had, and they were quite successful in that. Soon, Germany came with tanks and destroyed everything. My grandfather and his friend decided to go to the other side of bunker and to try to defend that side. But, in the moment they wanted to exit the communication room, explosion destroyed the ceiling, and his friend fainted. While my grandfather was still conscious, he tried to save himself, but the earth and few other things fell on him. Soon, because of explosions and shooting, he couldn't hear anything. He could only hear wind, and soon, he fainted. When he woke up, he turned on the lighter. He could see that trunk saved his life. He also saw dead bodies of his friends and soldiers. His friend was still unconscious, but he was alive. My grandfather tried to move his arm, but the trunk that fell on him and saved his life, also broke his arm. He managed to somehow crawl to his friend. That's when he saw the path that leads deep into the ground. He dropped his friend there, and not long after he got down there, too. He saw two dead German soldiers. He knew that his wound on his arm get infected, so he decided to do something about that. Near the German soldiers he found bandages, and here comes the part that always hooks me up. He found the knife and drank half of the alcohol bottle. Then, cut out his own arm without anesthesia. He bite his own shirt, so he doesn't bite his tongue because of the pain. He wrapped wound with alcohol and with bandages. He could heard German soldiers above them, and at the same time his friend got conscious. After some time, they got thirsty and hungry. They had to use what they had. For water, they used urine and drank it, but they remembered they're hungry. They had to turn to cannibalism. They had to eat those two dead German soldiers, which later werw found eaten. They ate them. After three days, German soldiers, which were above my grandfather and his friend, left, so that meant that my grandfather and his friend could go up there. Back up arrived and from so many people in that unit, only survivors were my grandfather and his friend. My grandfather came home with so many medals, but he was never the same. In his sleep, he would cry and sometimes he would stand in the middle of room holding a gun in his hand, like he expect someone to enter the room. My grandmother soon got sick from worrying about him and died. That's why my parents sent him to nursing home. When I turned 18 years, my parents and I went to visit him. I don't know why they didn't let me to visit him more, but I always thnought that everyone is afraid of him, and so was I. After we visited him, we went back to hotel, and went to sleep. Tomorrow in the morning, they called my parents and told them that he died. We went ti get his stuff. When we came back home, I looked through his stuff. I found some really interesting things. I found his medals, his pocket watch, and other things from his past. I saw one letter with my initials on it. I started reading that letter. This is what I read: ,,My dear Nicholas, please don't ask me how I know about you, because that's something you can't understand. First, let me tell you that I'm sorry for not being in your life. Now, I don't have a lot of time, so I'll be quick. I'm sorry if you can't read some words, but you have to understand. I'm not even sure if this will work, but I have to risk it, because I believe I put you all to great danger. I would gladly pass on to you all my knowledge, but here, in this place, knowledge means nothing. I, just like you, believed in God, mostly because my parents taught me to believe in him, just like your parents taught you. I was fighting for that God. I was ready to die for him. I thought we were fighting for honor of our God, but now, I see that I just cursed my soul. I cursed my soul, only someone above us can earn some money on us, and some of them are even here with me. I don't want to scare you, mostly because I wasn't by your side. I just want to warn you. You see, my child, everyone will tell you that I fought bravely, that I'm a hero, but that isn't the truth. There are things that your parents didn't told you, mostly because they didn't know real truth. First thing, my friend never survived battle. I never got any medals for fighting bravely and honorably. That was all hidden, so there won't be any drama. That day, my friend died, just like men. Yes, this will sound weird  and impossible to you, but keep reading, my child and you'll understand. When we entered that secret bunker, one of German soldiers was alive. He activated a bomb, blowing up, all three of us. I don't even know when I was aware of place in which I was. I don't remember a lot of things, but I will tell you how Hell looks. That's right, I'm not in heaven, I'm not a hero, because there's no excuse for murder. In the place, where is wars, battles, blood, that's when you know evil people are the reason for all of that. All of that is demon's food. In Hell, there's no fire, no cauldron and there are no devils. Everyone here are devils. Here, only exist darkness, smell of other people's burned skin, rotten flesh that stays rotten forever. I have a feeling that I'm here for centuries. Only thing we have are our thoughts, but they slowly fade away. You are slowly becoming one part of this place, slowly losing your memories of most beautiful things in your life, but the most ugliest memories are the only things that you will remember and won't be able to forget. There are demons in here, demons that once were humans, just like you are human. That's why I'm writing you all this quickly. I can't let them to see me writing this. When you die, all your private things that were with you when you died, are still with you for small amount of time. This letter I took from soldier who wanted to write farewell letter, but he didn't manage to do that, because bomb exploded and killed him, before he could finish his letter. I will spare you with details how I got this letter, and here is the reason I write you this. My child, when I became aware of place in which I am, just like the others, I praised the God in all possible ways to get me out of here, but God doesn't hear you. No one hears you, no one hears you scream, beside you. I was trying to dig my way out of here. I dug with my bare hands on other people's dead bodies. I couldn't find the exit, because exit doesn't exist. There was only one way to get out of here. One path which demons use to come and to get out of here. That path is door between this and your world. I tried to escape, but one demon used that chance to escape, leaving me here. In your world, few minutes have passed since my death in a war, but here, it's like a year. Later, I found out that demons that are longer here, can change shape and to take over the bodies. That demon managed to escape, but I managed to throw this letter in your world, when demon returned for second time. I couldn't leave this place, because I didn't had my body anymore. Luckily, in your world, demons can't stay forever in body of one mortal. They die when that mortal was supposed to die, if he hadn't died earlier. I believe that I would live long if I didn't died on the battlefield. However, when that demon died, I managed to throw this letter into your world. I'm sorry. I'm sorry for not being by your side. I also have one more thing to ask you. Never, my child, do anything that will get you in this place, never!"