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1 vote
6 answers
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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 ...
Pink Sweetener's user avatar
4 votes
3 answers
461 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 ...
Boo Radley's user avatar
  • 1,196
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 ...
Firedestroyer's user avatar
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 ...
FrontEnd's user avatar
  • 532
18 votes
7 answers
8k views

U.S. Army/Military's response time to an army appearing in the middle of a major city

In the scenario I have in mind, a handful of portals appear in a major U.S. city from which an army of golems starts pouring forth with the intent to cause as much damage as possible. The specifics ...
Azumentris's user avatar
13 votes
9 answers
7k views

How to hide an urban landmark?

Picture an alternative history Second World War Paris. The Third Reich must destroy the Notre-Dame de Paris, and the inhabitants must prevent this. The French do not have access to anti-air weaponry ...
A Lambent Eye's user avatar
0 votes
5 answers
514 views

How could a civilization end up confined within walls?

In Shingeki no Kyojin humanity is confined within walls to protect them from giants on the outside. In this case, I'd like to imagine a civilization (doesn't need to be all of humanity) within a huge ...
Masclins's user avatar
  • 1,684
8 votes
4 answers
1k views

City defenses against kaiju attacks?

In this series I'm mulling, kaiju have been around since prehistory, turning up off and on right up until modern times. In the near-future of this alt-history, say in the next twenty years (2040ish), ...
bsideswiped's user avatar
  • 1,221
5 votes
3 answers
4k views

How many troops would be needed to occupy a city with a population of 2.9 million? [closed]

I have a city that has a population of 2.9 million and an urban footprint around 2,037 square kilometres. For reasons unknown, it's been sealed off from the outside world by a shadowy military ...
user avatar
11 votes
15 answers
6k views

Is it viable to wall modern cities against "zombies"?

Let's say the city covers about 40 square miles (104 square kilometers), that machinery and some oil refineries are still usable (for construction vehicles), and that there is a lot to salvage in way ...
user avatar
6 votes
4 answers
6k views

English Medieval town layout

In Medieval England how would a stronghold town be laid out, and what would their defenses have been? I'm putting a city together and one important point is that it is secure from attacks. Attacks ...
Terry's user avatar
  • 3,711
9 votes
6 answers
2k views

How would humans in medieval times have adapted to giant roaming golems?

So in a world where giant rock and metal golems 'spawn' naturally. These golems are the kind with a power core hidden inside their bodies, their body and limbs are held together by invisible mana ...
Skye's user avatar
  • 10.3k
2 votes
2 answers
475 views

Using magnetic repulsion to build zombie-proof building

There has been much thought on how to create a zombie-proof building but I think I have this figured out. I propose a building that covers an area of about one city block, so: 264 x 900 ft, that ...
Kit's user avatar
  • 478
57 votes
9 answers
9k views

What would the fortifications of an underwater city look like?

Merpeople, along with other similar underwater humanoids, are often depicted as living in great cities beneath the waves. These cities have many positive things going for them: plenty of real-estate, ...
ckersch's user avatar
  • 46.5k
35 votes
22 answers
9k views

How would cities be designed that were threatened by dragons?

The dragons aren't all that common but they live in the nearby mountains and after a harsh winter are more likely to come looking for easy prey to fatten back up on. What are the major design ...
bowlturner's user avatar
  • 49.2k
22 votes
21 answers
4k 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 ...
Vincent's user avatar
  • 16.9k