As the night fell, a practical training session quietly began in a certain brigade of the 83rd Group Army. A communication vehicle was speeding under the cover of night, and the communication soldiers in the cabin were synchronously preparing for battle. After receiving the command, they stared at the screen, typed the keyboard, and adjusted the parameters... A set of actions flowed smoothly and seamlessly, and a mobile communication network was successfully built. Quietly, one message after another swept through the starry sky with the radio waves, successfully reaching the corresponding point. The battlefield belonging to the communication army is mostly silent: no visible swords, no sound of gunfire, all battles and battles are hidden in silent radio waves. The radio waves are silent, but the struggle and struggle of the communication soldiers are powerful and resounding. The study room was brightly lit, and they diligently studied communication knowledge to solidify their theoretical foundation. The principle of communication is a hard nut to crack. Day after day, year after year, relying on years of accumulation, the communication soldiers have successfully "woven" a smooth and unobstructed communication network time and time again. The telegraphic sound of "ticking ticking" came from the newsroom, and the ciphertext symbols rapidly circulated in the minds of the newsmen. "Proficient operation of the telephone is an indispensable skill for us. Remember the first time we practiced operating the telephone, a few hours later, my wrist became so sore that I couldn't hold anything." The newsman who used to press the equipment all year round had a thicker right wrist than an average person. On the training ground, the scorching sun shone brightly, and they braved the heat waves to practice their installation operations. Communication soldiers not only need to have a knowledgeable brain, but also excellent physical fitness. They tighten the ropes of fixed equipment time and time again, carrying heavy equipment to climb up and down. Their clothes are soaked in sweat, and their palms are marked with traces. Over time, everyone's palms have grown thick and hard calluses. New equipment has been added to the communication vehicle, and the communication soldiers are overjoyed. The operation cabin in summer is unusually stuffy and hot, with the constant buzzing of various equipment. However, they find it difficult to suppress their excitement and firmly stand on one side, exploring the equipment circuit and studying the operation process, just to make the new equipment work as soon as possible. Silent radio waves, striving for success. Countless nights of hard work and exploration witnessed the brave progress of the communication soldiers. (Lai Xin She)