In a fantasy world that I am working on, the world is covered in one massive ocean, with the only land being these 300 square miles "god" corpses (that do not decay) that can grant people magical abilities when they come in contact with a certain part of it. How this came to be is not important. What is important is that now humanity is constantly fighting for control of these bodies and their magic-giving properties.

Those not lucky enough to have to access these bodies (which is most of the population) live in giant, self-sustaining migratory ships about the size of a cruise ship. The people on the corpses make massive cities both on and inside the corpse, that, like the ships, are self-sustaining.

So, in order to get these corpses, the people must fight for them or at least be able to get inside of the corpse and perform a ritual in which the people performing it will achieve the magical ability that takes about thirty minutes.

So, with this in mind, how would a group of ships be able to invade one of these cities most effectively, and not destroy it in the prosses as they need to keep the corpse intact?

Note that this world is based on the Polynesia from 1800 B.C to 700 A.D so these people are expert sailors as well as have the technology of Imperial China except for the gunpowder. Also, note that there can be smaller ships too, the migratory ships are just the template.

  • $\begingroup$ 50 square miles is not sufficient for an enormous city - my own city of 50000 occupies 32 square miles. There is no allowance for farmland. Using medieval farming tech you are talking about 25 acres per person, although that can be augmented by magic and tech to approximate higher tech methods. $\endgroup$
    – pojo-guy
    Nov 26, 2017 at 23:43
  • $\begingroup$ @pojo-guy Better? Also they can use some of the nutrients ftom the corpse itself to help feed $\endgroup$ Nov 27, 2017 at 1:55
  • $\begingroup$ 300 square miles will just feed a city of 60000 using 21st century industrial farming tech (or magical analog) . It's not a huge city, but it's a potentiallly sustainable city. For comparison, Chicago covers roughly 230 square miles, and requires 4 acres per person of farmland to support it. $\endgroup$
    – pojo-guy
    Nov 27, 2017 at 2:07
  • 1
    $\begingroup$ Please use markdown, especially paragraphs (two linebreaks) to make your posts easier to read. And please stop writing "Leave any questions below". It's unnecessary because that's what comments are for. There is no need to write that into the question body. Your question body should only contain the information necessary to answer your question. $\endgroup$
    – Secespitus
    Nov 27, 2017 at 9:37
  • $\begingroup$ We must know about the magic. It's an important part of both attack and defense. No answer is complete without it. Can you provide insight into how your magic works and what people can do with it? In this case, being specific is good. $\endgroup$
    – JBH
    Nov 28, 2017 at 7:11

3 Answers 3


Two assumptions necessary to answer the question

There are various factors at play here that need to be explained in order for the formulation of an acceptable answer.


How powerful is the magic? Can it destroy ships? Does it give soldiers of the island superhuman strength? Does the magic make every single one of the body's citizens superhuman?


How self sustaining are the bodies? Do they draw food from the actual body or from the sea? Do the bodies provide metals and stones to the citizens? How does commerce work between bodies? Does it happen that bodies happen to produce products that others can't, such as a body that can provide iron, but can't provide wood, thus making commerce crucial? How far are these bodies from each other?

Four ways of dealing with the bodies

Anyway, I believe that there are currently, on the details you provided, four forms of dealing with these bodies.

Encircle the body

Some bodies might not produce food or other important products that are vital for the survival of it's citizens, so they rely on trade, and by effectively cutting them out of commerce, they'll be forced to surrender their body. Maybe it's not even necessary for the fleet to encircle the body, they can just attack any ship that comes out or tries to reach the body.

Board the body

Just as pirates and privateers did in real life, a fleet can successfully storm a ship by simply boarding it with well trained men, killing everyone in their way and assuming command of the body as fast as possible.

Infiltrate the body

A fleet can have many of it's troops enter the body stealthy, disguised as merchants, migrants, tourists, etc..., And secretly perform the ritual, or maybe execute a coup and take down the government, maybe acquire positions of power within the body, or if numerous enough, simply wreak havoc inside the city, making way for a fully fledged invasion.

Operate an actual siege

Ships can carry trebuchets, catapults, polybolos and other siege engines, while it's important for the body to come out as intact as possible, the best way to destroy a city, especially a fortified one, is to bombard it. After enough bombardment, an amphibian assault can take place and take over the city.

  • $\begingroup$ Read my "Possible uses for mental clone(s) question for info on the magic. As for the bodies they do not provide any metals or such exept for small amounts of flesh and meat. The real reason they are so nessesary is thier power granting ability and because they are the only islands in the world. $\endgroup$ Nov 27, 2017 at 2:17
  • $\begingroup$ Thanks for answering, but may I ask where the people who inhabit the bodies get metals, wood, silk, glass and stone?, and if commerce really is that important? Because if it is, then having a large armada will be a huge advantage in combat, all the migratory fleet will need to do is attack every ship trying to leave or enter the island. $\endgroup$
    – Jedboo
    Nov 28, 2017 at 23:32

Amphibious attacks

The fleet attacks one side while a few men, swimming or sailing in very low rafts infriltate the corpse from the opposite side.

There was a chapter of the television series Ancient Discoveries, Ancient Super Navies, that covered underwater attacks with very primitive techonology

Aerial attack

If the fleets are so good, your people have a very good understanding of sail technology. Even in the Middle Ages, the idea of using kites as a bombarding method was considered:

enter image description here

Very few walled cities would be prepared for an attack from above.


Siege tunnels

siege tunnels

from http://www.visitgibraltar.gi/upper-rock-great-siege-tunnels

Siege tunnels could be dug while the city defenders are distracted by the naval bombardment. I have to think digging thru a god body would be easier going than digging through solid rock. Siege tunnels have a long and very interesting history. http://militaryhistorynow.com/2012/06/11/the-warfare-underground-a-brief-history-of-siege-tunnels/

The miners could

1: Dig under the city defenses then burn the support structures in the tunnels, causing them to collapse.

2: Dig a tunnel large enough to allow attackers to emerge within the city (as the Romans tried to do in the siege of Ambracia.

3: Last, and coolest: attackers are trying to do one of the two options above when they emerge into a natural cavity within the god body. They perform the ceremony in there.


You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .