There is a great 30m fan made short story called "ABOMINATION" - WARHAMMER 40K STORY - ADEPTUS MECHANICUS. It's by Vox In The Void Its really good horror if anyone is interested in listening to it.
There are manufacturing worlds like Armageddon but there are more ((dedicated munitions worlds where their complete and entire exports could consist of nothing more than say a lasgun and that’s it where much like America, there’s more guns than people on the planet as well as dedicated manufactory worlds wholly dedicated to the mechanicus and they could fall under four categories, Low priority Medium priority High priority Toaster priority (the last one is of course a joke) but there are cases where the mechanicus would devote anything and everything for the protection of a single world and again depending on the worlds functions and output, determines how valuable they are to the wider imperium such as forge world agripinaa, which is famed for their much higher powered laser technology as well as the only forge world to be able to make the macharius omegon as well as the eradicator as well as supplying the majority of cadia’s military resources, that being said worlds dedicated entirely to war or also known as war worlds are worlds entirely dedicated to the arts of war, which possess large cities built more like a castle of fortress rather than anything resembling an actual city, such as the famous city’s of cadia in which despite it being an absolute nightmare for commuters as well as trying to get to anywhere, due to the city resembling more or less like that ball rolling puzzle game where you try and to avoid the holes and get the ball to the end and you get the idea, choke points dot the city whilst small bastions known as kassarks are built in opened up areas and are basically a castle inside of a castle whilst being in side of a castle, with enough ammunition to endure and last for months on end, all the while being extremely to deal with, all the while allied soldiers are pinging off the enemy via a cross fire from either side of the streets, and considering that military doctrine is prioritize even above basic literature, where rather than spending days on studying MC Beth, they would be fought sign language as well as military codes and phrases and the more important aspects of soldiery vs trying to teach an intellectual the meaning of life. Do what is asked of you, not to question the orders
