minecraft 1.8 how to get command block

We are a MCMMO JAVA Survival 1.14 server. Players get to claim land outside of cities that are 100% grief-free, and as they spend more time on the server, the number of blocks they can claim also goes up. Inside the cities, players can buy plots of land with in-game currency to set up a mob-free home (mobs don’t spawn in cities) and/or a shop. The server also has edited mobs. They get more powerful the further you travel from spawn, and the more powerful they are-the better the drops! With these edited mobs we have bosses with their own mechanics and drops in the server as well! We currently have four bosses in the server with more on the way! You can use /home and /spawn to get around on the server. There is also a teleport room for different cities. The spawn of the server rotates throughout the year between different cities to keep players spread out. We have seasonal events and dungeons such as our Zombie Santa event right now! We are also working on raids using the mythicmobs plugin. With McMMO you can train skills, and train/summon horses as well. Come check us out and join our awesome community! Server Rules: 1.) No griefing. 2.) Be respectful of your fellow players that includes in chat and in discord. 3.) Bug or oversight exploitation is not allowed. 4.) PVP is allowed outside any protected boundary 5.) Ice highways are not permitted to be built by players. Players must use horses, boats, and railways for their methods of faster travel. Server Location: Montreal