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Rate of expansion of the Imperium?
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Old 18 Apr 2007, 17:06   #1 (permalink)
Shas'Vre
 
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Default Rate of expansion of the Imperium?

Something recently occurred to me:

It's accepted that the Imperium reached its current size (about a million worlds) during the Great Crusade - any further gains made since then have generally been offset by losses, although the Imperium has had its highs and lows just like any Empire (Age of Apostasy anyone?). Feel free to disagree with me on this point, but that's the impression I've always had.

Anyway, the Great Crusade only lasted about 200 years before the Horus Heresy kicked in, so doing the maths, the Imperium must have been expanding during this time at an average rate of roughly 1 world every 1.75 hours.

Here's my working if you're interested:
200 years x 365 days = 73,000 days
73,000 days + 50 days to take into account leap years = 73,050 days
73,050 days x 24 hours in a day= 1,753,200 hours
1,000,000 worlds / 1,753,200 hours = 0.57 worlds per hour
1 / 0.57 = 1.75 hours per world

The mind boggles, doesn't it?
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Old 18 Apr 2007, 17:19   #2 (permalink)
Shas'El
 
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Default Re: Rate of expansion of the Imperium?

Quote:
Originally Posted by Kasrkin
Here's my working if you're interested:
200 years x 365 days = 73,000 days
73,000 days + 50 days to take into account leap years = 73,050 days
73,050 days x 24 hours in a day= 1,753,200 hours
1,000,000 worlds / 1,753,200 hours = 0.57 worlds per hour
1 / 0.57 = 1.75 hours per world

The mind boggles, doesn't it?
Hmm... good point

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Old 18 Apr 2007, 19:46   #3 (permalink)
Shas'O
 
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Default Re: Rate of expansion of the Imperium?

What in the hell possesed you to work that out?

Genmotty
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Old 18 Apr 2007, 20:04   #4 (permalink)
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Default Re: Rate of expansion of the Imperium?

Well, there were a lot of expedition fleets... (thousands, IIRC) so on average every 105 minutes a planet was conquered in the name of the Emperor, but was fought over for a whole lot longer. That makes the numbers slightly more bearable.
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Old 18 Apr 2007, 20:13   #5 (permalink)
Shas'Vre
 
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Default Re: Rate of expansion of the Imperium?

Quote:
Originally Posted by Genmotty
What in the hell possesed you to work that out?

Genmotty
Boredom, of course. :

I imagine the majority of the worlds brought into the Imperium submitted peacefully and without any real resistance, either for ideological reasons or because they realised what they were up against and that it would be pointless to resist.
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Old 19 Apr 2007, 06:22   #6 (permalink)
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Default Re: Rate of expansion of the Imperium?

First of all, when they say worlds, they mean planets and possibly even moons.



When you conquer a system, you're basically conquering 20 or so worlds.


There were 18 legions all going on their own individual crusades as fast as possible, not to mention the Imperial Army which was so much larger. Overall I think stating there would be over a hundred expeditions going on at any one time is not an over statement.

Most systems were very rudimentary in technology, being tribe/village based or some black powdered stages. Most human worlds had regressed a lot in technology. In the novel Farseer the main character describes a series of conquests he knew of in which basically around 100 men or so subjugated an entire HOSTILE world.

In most systems, there would only really be 1 or 2 worlds which the Imperium would actually need to fight over.

So really, 1 world every 1.75 hours, equals 1 system every 35 hours, which equals say 1-5 habitable worlds that needs to be fought over.

With 100 expeditions, it would be 145 days on average around for each new system to be brought into the fold by a single expedition.


When you think about it like that, could an expedition of a few tens of thousands bring a single system of black powder/modern technology society to subjugation within an average of 145 days, considering access to orbital bombardments.

I think most of those 145 days would be spend on travel to be frank.


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Old 19 Apr 2007, 17:48   #7 (permalink)
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Default Re: Rate of expansion of the Imperium?

Quote:
Originally Posted by crazedmongoose2003
When you conquer a system, you're basically conquering 20 or so worlds.
That's a rather serious exaggeration.
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Old 19 Apr 2007, 20:48   #8 (permalink)
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Default Re: Rate of expansion of the Imperium?

20 or so habitable worlds? Or 20 or so worlds total?

Your estimate on the number of fleets in the Great Crusade is off by a little bit, Mongoose. According to Dan Abnett's Horus Rising, there were a lot more. It's stated in there that according to logs kept by the War Council on Terra that there were:
-4287 primary expiation fleets. These guys were the ones who smashed things to pieces. This is where you've got the Legions and a considerable portion of the Imperial Army.
-60,000-ish secondary fleets who's goals were occupation and rebuilding the sometimes shattered worlds left by the other fleets.
-372 other primary expedition fleets who are, at any time, sitting around waiting for orders or rearming.


-Grandpa Ducky
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Old 20 Apr 2007, 04:48   #9 (permalink)
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Default Re: Rate of expansion of the Imperium?

Quote:
Originally Posted by Kasrkin
Quote:
Originally Posted by crazedmongoose2003
When you conquer a system, you're basically conquering 20 or so worlds.
That's a rather serious exaggeration.

Yeah but as proven my number of expeditions is a serious understatement.


It works out mathematically.

And when I hear them mention worlds I think of just world's in general, not habitable worlds. Because a lot of unhabitable worlds are still used, ie. shipyards, orbital stations, prison world, testing grounds etc
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Old 07 May 2007, 14:23   #10 (permalink)
Shas'Vre
 
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Default Re: Rate of expansion of the Imperium?

Quote:
Originally Posted by Grandpa Ducky
20 or so habitable worlds? Or 20 or so worlds total?

Your estimate on the number of fleets in the Great Crusade is off by a little bit, Mongoose. According to Dan Abnett's Horus Rising, there were a lot more. It's stated in there that according to logs kept by the War Council on Terra that there were:
-4287 primary expiation fleets. These guys were the ones who smashed things to pieces. This is where you've got the Legions and a considerable portion of the Imperial Army.
-60,000-ish secondary fleets who's goals were occupation and rebuilding the sometimes shattered worlds left by the other fleets.
-372 other primary expedition fleets who are, at any time, sitting around waiting for orders or rearming.


-Grandpa Ducky
Actually, that makes things a lot less insane. 4287 primary fleets, conquering a million worlds between them, means 233 worlds each, so an average rate of just over 1 a year. Perfectly doable considering the awesome power of the Legions, Army and Navy at that time.
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