r/MilitaryWorldbuilding is a subreddit with 23k members. The community frequently discusses military, infantry, weapons, navy, and space, and the most common flair used is lore, weapon, infantry, ground vehicle, and aircraft.
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
: "South Japanese Armed Forces and Law Enforcement Agencies"
30 posts
#2
Weapon
: "Weapons of the Kyoto Accords"
22 posts
#3
Infantry
: "My Novarisian Mechanized Infantry Squad"
21 posts
#4
Ground Vehicle
: "The A-60 Siege Tank"
13 posts
#5
Aircraft
: "NSU: J-91 Valravn"
12 posts
#6
Advice
: "Need thoughts on a Private Army turned Armed Forces"
11 posts
#7
Character
: "New York Red Guardsman in Kaiserreich (1937)"
10 posts
#8
HALP!
: "How big of a gun could you fire from the back of a mammoth?"
9 posts
#9
Meta
: "The enemy is advancing. You need to defend the territory. At any cost, the enemy shall be stopped before it crosses the river and makes their way South. [Interactive post]"
7 posts
#10
Equipment
: "CB-133 Portugals Steelshod Fist"
7 posts
Member Growth in r/MilitaryWorldbuilding
Yearly
+15k members(184.3%)
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About
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Last updated: September 7, 2026