Questions tagged [military-defense]

For questions about strategies and structures for defending from a particular type of attack

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10 votes
6 answers
4k views

General rule to spacing towers on a medieval city wall

I'm workshopping a medieval fantasy setting and one of the primary locations is a large port city, located on a bay out to the ocean. I'm still early in development, but since this settlement is quite ...
9 votes
8 answers
2k views

What is the easiest fuel a blockaded, sanctioned nation can procure/synthesize during a war?

In my world, which is partially based on a WW2-style environment, there are two large countries, namely A and B, that are fighting each other. A is a Nazi Germany-type country with fine revised ...
4 votes
8 answers
2k views

What would be the primary weaknesses of massed archers?

Setting: In my world, there exists a nation that has a military primarily made up of archers. Each citizen is required to have a level of proficiency with a longbow, both in individual shooting and ...
5 votes
4 answers
888 views

Using gravimetry to detect cloaked enemies

In the future, a variety of different technologies to evade detection are employed, such as harmful sensory input that renders one incapable of perceiving the object that attempts to evade detection ...
15 votes
14 answers
4k views

How can a pre-industrial civilization effectively defend against aerial attacks from large, fire-breathing creatures without the use of magic?

In my fictional world, there is a pre-industrial civilization that has advanced to a level of technology similar to that of the 15th-century Earth. This civilization is under constant threat from ...
6 votes
6 answers
830 views

Most effective castle fortifications against fantasy/medieval airborne attack?

Edit: This question has been reopened! Medieval castles are mostly designed towards delaying or obstructing ground attackers. The only real threat a castle faces from above, at least from humans, ...
1 vote
6 answers
2k views

What are the concerns with residents building lean-to's up against city fortifications? [closed]

In historical illustrations of cities with defensive walls, I have noticed that it is very rare for a non-defensive structure to be built directly adjacent to the inside face of the wall. A building ...
17 votes
8 answers
7k views

Muggle military tactics against mind-controlling wizards

Spoiler: Wall of text incoming, TL;DR provided. Once upon a time there were two worlds, separated by some kind of dimensional veil. One world is populated by WW2 level industrial civilization, the ...
7 votes
5 answers
737 views

In a general sense, would it be better to equip troops with plate carriers, body armor, etc. if they’re fighting against zombies?

In a general sense, would it be better to equip troops with plate carriers, body armor, etc. if they’re fighting against zombies? Right now, my Troopers (what someone in the US Garrison is called) ...
3 votes
3 answers
157 views

Supersoldiers enabling man-powered vehicles

Just as an exercise in worldbuilding, imagine a world where genetic engineering (on subjects that already reached maturity, so no need to modify embryos and raise them to adulthood) creates ...
12 votes
10 answers
2k views

Klemperer rosette vs Relativistic Kill Vehicles

In the book The Killing Star, Relativistic Kill Vehicles (RKV) are described as the ultimate weapon. They are described as impossible to stop, so that any civilization that develops them better ...
12 votes
16 answers
5k views

What defensive invention would have made the biggest difference in the late 1400s?

One world I've been tinkering on for months is an alternate history where Europe did not colonise the rest of the world, different global cultures remained (more) independent, until in the age of the ...
13 votes
9 answers
1k views

How might you design a solarpunk military?

So the ideal of solarpunk is obviously that you would not need one, but if not every nation went in a solarpunk direction at the same time, you would likely need a defense against those that did not ...
5 votes
2 answers
895 views

How successful could rapidly spreading new predator be in world with today's type of development

I was rewatching Secret war from Love, Death & Robots and started wondering, would the monsters from that episode pose any actual threat in today's world? Let's assume the monsters have similar ...
25 votes
12 answers
5k views

How do I defend a walled citadel from a lizard army?

The setting is post apocalyptic wastelands. The use of nuclear weapons has resulted in the creation of mutations, the most deadly of which are the lizards. The antagonist devises a technology that ...
3 votes
9 answers
2k views

What is the least far-fetched way to defend against nuclear submarines? [closed]

Since the Cold War, nuclear powers have said "don't mess with me" using the Nuclear triad, nuclear warheads on bomber planers, missile silos, and in submarines. Of these, the most important ...
0 votes
1 answer
188 views

Could Tesla coils be used for missile defense?

Some facts about the real world, Terra 2023: tensions between Russia, NATO, China, DPRK, India etc. are high. These powers keep trying to get the edge over each other to establish missile supremacy. ...
2 votes
3 answers
225 views

Would my particle cloud shield be effective in limiting the use of combined arms/maneuver warfare operations? [closed]

Since I have particle shields in my setting for my armored vehicles, my military forces have also decided to try and extend that technology to the larger battlefield. One of the issues plaguing my ...
8 votes
4 answers
1k views

What properties should my fictional HEAT rounds have to punch through heavy armor and ERA?

I have some forcefield shielding in my setting whereby particles act essentially as solid mass armor for all intents and purposes. Warheads grind themselves down against armor just like modern ...
2 votes
3 answers
220 views

Would the articulations/joints/bearings of a bulletproof full-body suit be easily pierceable?

Context: This armour was designed to be a full-body "bulletproof" suit, only capable of stopping bullets from military assault rifles that have the same capabilities of today's ones. Of ...
1 vote
2 answers
145 views

How would pronogrades build embattlements?

While there have been a lot of designs for embattlements across times and cultures, there is onee constant I have noticed: They all share similar proportions. This appears to be related to the erect ...
7 votes
2 answers
225 views

Ideal materials for the outer layer of a whipple shield

https://en.wikipedia.org/wiki/Whipple_shield What I'm looking for is the best possible materials for the outer layer of a whipple shield. From what I understand, the outer layer turns a hypervelocity ...
4 votes
1 answer
318 views

Castle defenses against dragons

In my world, there are dragons that the people have to fight against. In many forms of fantasy, despite having the giant creatures, their castles still look like the traditional medieval castle. In ...
3 votes
3 answers
215 views

A potential way to use "space mines" to guard a moon or small planet

Space mines have a glaring problem which is the fact that space is really big, But I have devised a space mine which could be used to defend a moon or small planet. My space mine would be Casaba-...
4 votes
2 answers
327 views

What are Effects of shielding on length of modern warfare?

In my setting there are particle shields that can be extended from a central source given enough power and particles to fuel the shield. This is a world where armor has outpaced weapons (nuclear ...
4 votes
5 answers
313 views

How would defense tactics change if 10% of people could fly? [closed]

If one in ten people possess the magical ability to fly, would this change the development of defensive measures and tactics in a society reminiscent of Britain in the medieval era? No other magic ...
22 votes
21 answers
3k views

In a world of magic, why would cities still find high walls useful?

In a world where magic exists. A large army can hire several mages that able to cast spells as, or even more, powerful than a 16-19th century cannon. The city walls will not keep out a determined mage ...
4 votes
3 answers
435 views

How would warfare change if everyone were concentrated into giant cities?

Due to environmental concerns (very cold winters) humans are concentrated into a few large cities all around the world; smaller isolated settlements die out quickly. These cities would form the basis ...
2 votes
1 answer
183 views

How can the dragon NORAD keep everyone safe and in its sights with minimal resources?

POV: Dragons live in an island group, referred to as Io's Blood. While there's still some tension between its resident clans, they managed to come together under The Council of Wyrms, which acts as ...
8 votes
13 answers
2k views

Why can't the military stop my hidden pirate haven from illegal gambling and smuggling?

My pirate safe haven runs gambling rings, horse races, and trades contraband but no one can find it or penetrate it. Why? I've got a story revolving around pirates and a rescue. The pirates have a ...
4 votes
6 answers
1k views

What would be US Military procedure for investigating a portal to another world? [closed]

Here's the scenario I'm working with: a portal opens up within 30 minutes' drive of one of the better equipped military installations in the continental United States. It is stable, shows no signs of ...
15 votes
11 answers
1k views

How could trading posts be defended against pirates?

I got many little trading posts all over my worlds and orbiting around them. Everyone can trade in there, nice guys as well as scum of all kind. The trading posts are rich places. How could a system ...
8 votes
5 answers
3k views

Why does a hypersonic missile need to cruise Earth at low altitude before hitting its mark?

Imagine a certain nation tested a hypersonic nuclear-capable missile and it was designed to make a few trips around the Earth at low altitude before striking the surface. Don't they need to worry ...
0 votes
0 answers
134 views

What defences did Camp David have circa 2017

The aliens whose kids sent Jormungandr, the Snakebot of Doom, have shown up at Earth, and have announced that they will be taking over administration of Earth for the foreseeable future. As part of ...
7 votes
4 answers
382 views

Feasibility of active defense systems against kinetic weapons

Spurred on from an earlier post over here. The general consensus was that if a depleted uranium round is coming your way, don't be in its way. And if you do get hit, disperse the damage as much as ...
28 votes
22 answers
6k views

What would cause city walls to return?

Essentially, what would, in a modern (21st century) society, cause city walls to return? I don't necessarily mean stone walls; steel, titanium, and aluminum walls are perfectly acceptable. This ...
6 votes
6 answers
573 views

What military exploitation is possible of an isolated, barren island by a pre-industrial world?

I've got a world with a long oceanic navigation tradition, but no reliable steam engines. Imagine it's the 1600s in our timeline. There's two superpowers (think two Chinas), and between them an ocean ...
15 votes
9 answers
3k views

What is the safest and most extravagant place for an interstellar emperor to make his palace?

Every evil galactic empire has an emperor’s palace. From the Goa’uld to the Sith Empire to House Harkonnen, every emperor has one extremely lavish but heavily defended structure they call home. My ...
1 vote
1 answer
181 views

Could möbius ring shaped devices deflect or possibly redirect bullets?

As a rule, my sci-fi has no force fields. This is interesting, because every type of shielding that would normally have no mass are restricted to be physical devices. The most notable I'm working on ...
2 votes
4 answers
316 views

How do you have Mutual Assured Destruction in space politics

Space is VAST, and many country occupied only a part of it. They do trade and make war just like we do on Earth. On Earth, we have our "peacemaker" between powerful nations in the form of ...
2 votes
2 answers
290 views

Could a coalition of powerful corporations protect itself from a hostile neighbour?

This is an alternative Earth-like world, which has just entered the rough equivalent of Cold War. The primary contenders are the large quasi-socialist country with a strong command economy, opposed by ...
5 votes
7 answers
2k views

How to justify small Hominids not being conquered by (anatomically modern) Humans?

So in my setting there's a group of Hominids distantly related to humans. They live in a forested continent on the coast of which humans have created colonies. They have patchy light brown skin for ...
4 votes
13 answers
1k views

How can people kill considerably death-resistant aliens with everyday objects?

In a world where people find aliens invading their homes, with what household object or objects found on the street or nearby, could people defend themselves against the invader? The rules of the ...
58 votes
23 answers
11k views

How do I defend an island nation from attackers with 15th century technology?

Apologies in advance that my bullet points got away from me and turned out a bit long, but I'm trying to give as much information as I can to ward off initial questions. Imagine the following ...
1 vote
2 answers
127 views

Joint Nuclear Weapons Control?

As stated in a previous question, the main political entity of my world, the United Commonwealth, is protected by a combined Army and Navy, made up of personnel from all nations, and funded by all ...
6 votes
6 answers
888 views

How could an ancient army go about defeating a giant army of monsters? [closed]

I've been trying to study military victories against the odds but a lot of the stuff doesn't apply it seems. The armies in those battles are usually not outnumbered as severely and when they are, they'...
7 votes
4 answers
2k views

What shape most efficiently disperses an overpressure wave from a nuclear weapon?

One rule of architectural design in one of my settings is the prime number rule: a building that abides by this rule can survive a 2-kiloton nuclear surface burst 300 meters away 5 times in a row ...
1 vote
2 answers
270 views

How do I design a main battle tank to fight a tactical nuclear war?

Exactly what it says on the tin: how do I design a tank to fight a nuclear war? Nukes in this setting are limited to one kiloton yield or below by treaty, with the smallest ones having a yield of ten ...
48 votes
22 answers
9k views

What are some tactics for the ancient Greeks to defeat alien invaders?

Context It's the 4th century BC, Alexander the Great has just passed away and his empire has been divided amongst his generals. Now the successor states of Egypt, the Seleucid Empire, Macedonia, ...
6 votes
2 answers
135 views

How could the connections of a hivemind work to ensure it can't be jammed or tapped?

So, Armchair Chem is an evil corporation that has access to technology some consider unnaturally ahead of its time (the correct term is anachronistic, but whatever). One such is the Replica Forces. A ...

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