Questions tagged [military-defense]

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

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15 votes
8 answers
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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 ...
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  • 317
4 votes
5 answers
276 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 ...
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  • 2,738
4 votes
3 answers
345 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 ...
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  • 1,136
21 votes
10 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 ...
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  • 1,048
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 ...
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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 ...
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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 ...
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  • 5,864
0 votes
0 answers
88 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 ...
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6 votes
4 answers
217 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 ...
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  • 885
27 votes
22 answers
5k 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 ...
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6 votes
6 answers
542 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 ...
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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 ...
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  • 1,165
2 votes
4 answers
290 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 ...
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  • 1,740
2 votes
2 answers
142 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 ...
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  • 317
1 vote
1 answer
160 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 ...
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  • 8,617
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 ...
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1 vote
2 answers
110 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 ...
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  • 521
6 votes
6 answers
813 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'...
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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 ...
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  • 9,606
1 vote
2 answers
189 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 ...
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  • 9,606
7 votes
2 answers
601 views

What would armor designed to withstand a grenade blast in an enclosed space look like?

Let's say that someone throws an M67 hand grenade into a completely enclosed room - i.e. the door is the only entrance/exit. How would someone build a suit of armor to functionally negate the ...
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  • 9,606
3 votes
3 answers
765 views

How do you defend against a nuclear torpedo?

For reference: the nuclear torpedo. It is a torpedo with a nuclear munition for a warhead - exactly what it says on the tin. Range is 100 kilometers at 75 knots; guidance is sonar, with gyroscope ...
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  • 9,606
-1 votes
4 answers
183 views

How does a projectile get past a rapid-firing, hyper-accurate point defense system?

Let's say that there's a point-defense system that's very good at hitting targets - as a matter of fact, it hits everything it shoots at. Moreover, it fires incredibly quickly and has, for the scope ...
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  • 9,606
2 votes
5 answers
708 views

How does one defend a military depot against Nazi-ish Sasquatch-vampires in a continent-sized post-apocalyptic wasteland?

There is a lengthy background to this, which I feel is relevant. Yes, the title is supposed to be somewhat B-movie-esque. For some reason, there are Sasquatch-vampires (more on their biology later) on ...
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  • 9,606
9 votes
9 answers
2k views

How can nations control large plains and deserts?

How can organized nations in a fantasy setting control large land masses (20-30,000 km²) made of deserts, rocky deserts, and drymuds? By control, I mean enforcing laws, defending it during conflicts, ...
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  • 227
16 votes
7 answers
6k views

How to defend a kingdom without killing anyone [duplicate]

What resources, schemes, and strategies does a medieval king need to protect their power without killing or torturing?
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6 votes
5 answers
424 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, ...
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  • 996
4 votes
3 answers
178 views

Would it be viable to use air to deflect projectiles?

The initial problem is energy and the air. How would a mechanism like this work? Pressurised air inside a cylinder that is released when a projectile is detected? Instead of pressurised air inside a ...
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  • 1,031
28 votes
17 answers
6k views

How could medieval ships protect themselves from giant mermaids?

Long ago when apes and hominids split off a third group began to live in the seas and became mermaids/seafolk. Among several species of mermaids, there is a species of "giant mermaids" who ...
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  • 6,033
4 votes
2 answers
192 views

In a 12-Pointed Star Wall, Which Shape Would the Inner Wall Be for Maximum Defense?

In this generic scenario, there is a settlement protected by both an inner and outer walls. The inner wall protects an area of 72 hectares. Both walls are 40 feet tall and thick and made of brick. ...
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8 votes
4 answers
1k views

What are things to consider and keep in mind when making a heavily fortified and militarized border?

Here are some maps for reference For some context, in my world, from 2030-2040, an event known as the Great Collapse saw the human race pushed towards the brink of extinction due to Unidentified ...
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  • 1,209
8 votes
3 answers
674 views

In what way could a small, non-magical force hold a castle against a larger, magically-abled force?

Say that through some subterfuge and the element of surprise, a small, well equipped force of soldiers managed to wrest control of a castle from a government. The government wants that castle back, ...
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3 votes
4 answers
2k views

How to protect a secure compound breached by a small modern military?

I am trying to work out some of the final details of a modern urban compound, surrounded by perimeter walls and a gate. A battle (modern urban warfare with firearms and grenades mainly) takes place ...
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  • 522
4 votes
3 answers
408 views

How effective would the White House serve as a fortress or makeshift Forward Operating Base/FOB?

So in my world, the entire White House area has been turned into a small fortress/FOB. Due to the post-apocalyptic dystopian state of my world what with zombies, breakaway secessionist states, hostile ...
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  • 1,209
2 votes
1 answer
166 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 ...
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6 votes
5 answers
600 views

How can a WW-II style bunker be hidden?

Besides the obvious steel entry doors, I am most concerned about air-inlets and exhausts. Electricity for essential things like lighting, ventilation or pumping water is generated by diesel generators....
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  • 161
2 votes
5 answers
341 views

Realistic protection from rayguns?

Ok, this is kind of two questions in one In a scifi setting where laser or plasma are the main weapons, what sort of system would be used to protect from the heat and radiation? My idea was a heat ...
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  • 97
3 votes
3 answers
291 views

How to regulate or control an intergalactic highway?

Background: This universe is set 500 to 700 years in the future. Humans have been able to expand across the galaxy using a series of “star gates”, basically 5 mile wide rings that warp space to ...
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  • 2,063
5 votes
3 answers
286 views

How would you design a space station able to ricochet off railgun bullets?

In space somewhen in the future there's need to build a space station able to sustain heavy railgun fire. How would you design it? I was thinking about building something similar to a 17th century ...
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3 votes
3 answers
193 views

Defense of Atlantis?

In my alternate timeline, the original Atlantean civilization perished around 1,500 BCE. Around 1000 BCE, humans once again find Atlantis, this time with 10,000 Greek outcasts fleeing from persecution ...
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  • 577
4 votes
8 answers
3k views

How to survive a siege for fifty years?

A long and costly war is finally coming to a close. The rebels are losing territory fast and only have rolling hills to guard their last city. According to the scouts, the imperialist regime is about ...
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  • 1,585
6 votes
6 answers
321 views

How to defend a sailing ship from a wyvern

Pirates are always a threat, but this particular coastal city has another worry - wyverns. In order to get from said city to open seas, the ships must traverse about 600km towards the exit from the ...
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  • 1,586
10 votes
5 answers
958 views

Best way to defend against a army of 100 thousand? [closed]

So our protagonist city-state is a decently sized, rich in resources, and populated(think 100 thousand people) kingdom with Early Medieval Dark Ages technology(no gunpowder or cannons). The attacker ...
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  • 577
9 votes
12 answers
3k views

Defending a planet's surface from ships in orbit

For a story I'm writing I'm planning a large-scale battle between human mercenaries on the surface who will eventually come under attack by hostile alien forces. At first, the fight will feature small ...
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3 votes
4 answers
230 views

Nano-storm horror, and how to defend against potential warcrime tech [duplicate]

Preface: The setting is a homeworld exoplanet of an alien species, abandonded (save a hibernation cycle-style subterrainian research settlement) for conservation after a 10 000+ year prior climate ...
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  • 3,507
11 votes
7 answers
670 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 ...
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24 votes
20 answers
8k views

Defenses against someone moving at 1500+mph

This question is about speedsters and defending against them (Dr Wells' gun thing doesn't work). There is a speedster. His 'cruising speed' is about 1000 mph, but can get up to 2000 mph if needed. ...
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5 votes
11 answers
3k views

What explosive mines discriminate against hovercraft?

Tech level is post WW2 era. Hovercraft is often loaded with tons of explosives which is then set off within the proximity of an enemy vehicle or infrastructure, they can cover a large distance in a ...
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  • 45.9k
20 votes
5 answers
4k views

Rhino cavalry charge! How horrible would it be?

There have been questions asking if rhino, hippo and other similar kinds of cavalry are feasible. Now let's for a moment skip that and assume we have some special means, on the end of which, we get ...
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2 votes
4 answers
212 views

Defending a kingdom against highly arboreal (6-limbed) enemies

Before getting on to the main topic, I should point out that the defenders and attackers are both the same species, no humans are present in this scenario, as it does not take place on Earth. The race ...
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