r/MilitaryWorldbuilding is a subreddit with 22k members. The community frequently discusses military, infantry, weapons, navy, and space, and the most common flair used is lore, weapon, advice, halp!, and infantry.
This subreddit is for posting worldbuilding ideas that pertain to anything and everything military. Share weapons, ships, social elements, suggestions, tips, or anything else as long as it is relevant to something militaristic in (one of) your world(s).
Popular Topics in r/MilitaryWorldbuilding
#1
Military
94 posts
#2
Infantry
20 posts
#3
Weapons
18 posts
#4
Navy
16 posts
#5
Space
15 posts
#6
Aviation
14 posts
#7
Naval
12 posts
#8
Warfare
11 posts
#9
Ships
11 posts
#10
Battleship
11 posts
Flair Used in r/MilitaryWorldbuilding
#1
Lore
: "Juadenite Archipelago Federal Army Organization"
23 posts
#2
Weapon
: ""Down with the Empire! Down with the Mistland!". Weapons of the Soldiers and Settlers Republic [The War of Mist]"
21 posts
#3
Advice
: "Ammunition is important. Don't forget about your calibres while designing your firearms and artillery. I forgot. Now I have to deal with it..."
7 posts
#4
HALP!
: "[Question] I've heard the phrase "cavalry never won a single battle during WWI" and it made me thinking, since cavalry is... well, important part of my lore. Or... was"
6 posts
#5
Infantry
: "New nation here"
4 posts
#6
Prompt
: "How is trench warfare conducted in your world?"
3 posts
#7
Watercraft
: "Super Fusō"
3 posts
#8
Equipment
: "The first in depth round of my world"
3 posts
#9
Meta
: "How would the military from YOUR worldbuilding project plan the defense? [Interactive post]"
2 posts
#10
Character
: "Special Forces Detachment example photo"
2 posts
Member Growth in r/MilitaryWorldbuilding
Yearly
+15k members(210.2%)
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About
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Last updated: July 7, 2026