The ultimate comment on planetary invasions?

A thread of 5 messages, 12 July 1991 to 22 July 1991, in the order they were sent.

#2596 The ultimate comment on planetary invasions?

Hello,

  A number of people (including me) have been arguing about planetary
invasion. Without going into the relative merits of deep meson guns
versus orbital defence belts, I would like to pose a number of questions
cum comments, as follows:

  The prices of various armaments are just paper money to us, the
vehicle designers and wargamers - what do we care if the Meson-T gun is
MCr3,000 or MCr3,500? However, assuming a limited GPP (Gross Planetary
Product) and a limited defence spending, how many are produced? How many
warships and assault tenders?

  The very fact that spending is limited would favour an attacker or
defender who balances the quantity of medium priced combat vehicles with
a quality of high priced combat vehicles (be these vehicles TL9 grav
tanks or TL15 super dreadnoughts). There may be 5 Atlantis battleships
(Robert Dean's Prize Baby :-) in a star system, but a mixed force can
outmaneuver it and perform a planetary landing.

  On another hand - a planetary assault may take place WITH THE CONSENT
of the defender - if an attacker finds himself faced with an apparently
impenetrable defence belt, he may just give up the idea of an assault
and accelerate a few medium sized asteroids at the target planet. Thus a
situation similar to a battle of Maldon may arise - the defender
granting battlespace to the attacker.

  If the above comments hold true the deciding stage in an invasion
would be how much of the attacking force can the defender destroy before
an engagement on the world surface, but without making him desperate
enough or hurt enough to bombard and jump outsystem. This may or may not
be the fine art of generalship in the future.

  The future batlefiled itself depends very much on the concept of
anti-gravity. If it invented (and within Traveller it is assumed so),
filed artillery and infantry will rapidly decline in importance. Indeed,
infantry is losing importance even now, long before even air-cushion
combat vehicles have appeared.

  Infantry shall continue to be used in city assaults, police and
security work, shipboard actions and heavily broken areas combat.
Artilley shall probably lose all almost all use except for the most
rapidfiring cannon in light anti-vehicle combat.

Yours,

Marc A. Volovic
Sgt (res)
[email removed]

#2604 Re: Not the ultimate comment on planetary invasions

Marc Alexandrovich Volovic [email removed] writes:
>   The very fact that spending is limited would favour an attacker or
> defender who balances the quantity of medium priced combat vehicles with
> a quality of high priced combat vehicles (be these vehicles TL9 grav
> tanks or TL15 super dreadnoughts). There may be 5 Atlantis battleships
> (Robert Dean's Prize Baby :-) in a star system, but a mixed force can
> outmaneuver it and perform a planetary landing.

Perhaps, but there had better be something that can take out those 5 Atlantis
class battleships, or at least keep all 5 occupied for a long time, or else
at least one battleship will come and make the invasion very costly.

>   On another hand - a planetary assault may take place WITH THE CONSENT
> of the defender - if an attacker finds himself faced with an apparently
> impenetrable defence belt, he may just give up the idea of an assault
> and accelerate a few medium sized asteroids at the target planet. Thus a
> situation similar to a battle of Maldon may arise - the defender
> granting battlespace to the attacker.

The whole assumption in this discussion is that for some reason, the attacker
can not/does not want to destroy the defender totally in this manner.  (Why
was such a tactic never used during any of the Frontier Wars, by the way?)
Otherwise, if the attacker finds himself faced with an unbeatable defence
at any stage, he can just give up, take off and nuke the planet from orbit.

>   If the above comments hold true the deciding stage in an invasion
> would be how much of the attacking force can the defender destroy before
> an engagement on the world surface, but without making him desperate
> enough or hurt enough to bombard and jump outsystem. This may or may not
> be the fine art of generalship in the future.

Fine art?  Either the attacker wins, or the defender wins.  If the defender
wins, the attacker brings up the asteroid.  End of defender's story.

>   The future batlefiled itself depends very much on the concept of
> anti-gravity. If it invented (and within Traveller it is assumed so),
> filed artillery and infantry will rapidly decline in importance. Indeed,
> infantry is losing importance even now, long before even air-cushion
> combat vehicles have appeared.

Why?  There are reasons why the infantry has to get out of the vehicles
and fight on foot.  The only way anti-gravity will put an end to fighting
on foot is if every soldier gets a grav-belt, and anyone with Striker will
know what that will do to the unit's maintenance costs!

>   Infantry shall continue to be used in city assaults, police and
> security work, shipboard actions and heavily broken areas combat.

The first and last of those come under the heading of "Getting stuck in
and capturing the real estate".  Assuming you actually want control of the
planet, you're going to have to take control of the cities, which means
city assaults.  If the cities have been bombarded, it means broken areas
combat.

> Artilley shall probably lose all almost all use except for the most
> rapidfiring cannon in light anti-vehicle combat.

Certainly it is true that at higher tech levels, you can build vehicles which
are invulnerable to any practical conventional CPR or mass-driver round.
So long as the infantry stay in their heavily armoured APC's, or in their
bunkers, they are safe.  (And so long as someone doesn't let off some nuclear
rounds.)  Artillery will still be a good way of keeping their heads down, and
weakening their morale.

- - --
 "Keyboard?  How quaint!" - M. Scott

 Adrian Hurt			     |	JANET:  [email removed]
 UUCP: ..!ukc!cs.hw.ac.uk!adrian     |  ARPA:   [email removed]

#2631 Re: More planetary defenses

From: [email removed] (Joe Burger)
Adrian Hurt wrote:
> >The whole assumption in this discussion is that for some reason, the attacker
> >can not/does not want to destroy the defender totally in this manner.  (Why
> >was such a tactic never used during any of the Frontier Wars, by the way?)
> >Otherwise, if the attacker finds himself faced with an unbeatable defence
> >at any stage, he can just give up, take off and nuke the planet from orbit.
>
>   Wars have been fought for many reasons, but history often tends to
> show that the underlying causes of the conflicts are often economic.
> The other reason can probably be summed up as "ethical" reaons.
> A better way to examine most warfare in the imperium might be to
> consider it as economic warfare.

If we're considering action within the Imperium, all bets are off.  There's
a thing called the Imperial Rules of War to consider.  These rules aren't
written down anywhere, because officially the Imperium doesn't approve of
any war within its borders.  Unofficially it tolerates very limited warfare
as being a quick release of tension and resolution of conflict, as opposed
to long, drawn out economic warfare - which I would define as sanctions and
other interruptions of interstellar trade, and which are even worse for the
Imperium as interstellar trade is its lifeblood.

So, the Imperium will tolerate limited warfare.  That's how mercenaries make
their living.  It doesn't tolerate excessive off-world interference - in
other words, if the invader is capable of taking on the whole planet, it
will probably have to take on the Imperial forces shortly afterwards.

I was under the impression that the invasions being discussed would either be
part of the Frontier Wars, or take place well away from the Imperium (and
probably any other large interstellar organisation).

- - --
 "Keyboard?  How quaint!" - M. Scott

 Adrian Hurt			     |	JANET:  [email removed]
 UUCP: ..!ukc!cs.hw.ac.uk!adrian     |  ARPA:   [email removed]

#2652 YACOPI (Yet Another Comment On Planetary Invasions)

Adrian Hurt [email removed] writes:
>Marc Alexandrovich Volovic [email removed] writes:
>>   The very fact that spending is limited would favour an attacker or
>> defender who balances the quantity of medium priced combat vehicles with
>> a quality of high priced combat vehicles (be these vehicles TL9 grav
>> tanks or TL15 super dreadnoughts). There may be 5 Atlantis battleships
>> (Robert Dean's Prize Baby :-) in a star system, but a mixed force can
>> outmaneuver it and perform a planetary landing.
>
>Perhaps, but there had better be something that can take out those 5 Atlantis
>class battleships, or at least keep all 5 occupied for a long time, or else
>at least one battleship will come and make the invasion very costly.

  Granted, partially. However, it may be possible to take out the Atlantis
sized ships with ramming drones. Does it matter how much damage the Meson-T
can do on it - anything short of "Ship Vaporized" will still propel a drone
at a high speed into the ship. Black globes MAY be the answer, but the
arguments about these were held and held and held. Say about 40 unmanned
20 displacement ton drones would do the trick?

>>   On another hand - a planetary assault may take place WITH THE CONSENT
>> of the defender - if an attacker finds himself faced with an apparently
>> impenetrable defence belt, he may just give up the idea of an assault
>> and accelerate a few medium sized asteroids at the target planet. Thus a
>> situation similar to a battle of Maldon may arise - the defender
>> granting battlespace to the attacker.
>
>The whole assumption in this discussion is that for some reason, the attacker
>can not/does not want to destroy the defender totally in this manner.  (Why
>was such a tactic never used during any of the Frontier Wars, by the way?)
>Otherwise, if the attacker finds himself faced with an unbeatable defence
>at any stage, he can just give up, take off and nuke the planet from orbit.

  I assume the following - Steve Kellog suggested a possible way to
obliterate (or, at the very least, heavily damage) any planet by a single
Type S scout. This is a tactic employable by any starfaring nation. The
only possibility is to have it mutually proscribed, the same going for
planetary bombardment to destruction. Otherwise - better not speak, eh?


>>   If the above comments hold true the deciding stage in an invasion
>> would be how much of the attacking force can the defender destroy before
>> an engagement on the world surface, but without making him desperate
>> enough or hurt enough to bombard and jump outsystem. This may or may not
>> be the fine art of generalship in the future.
>
>Fine art?  Either the attacker wins, or the defender wins.  If the defender
>wins, the attacker brings up the asteroid.  End of defender's story.

  See comment above. Otherwise, granted.

>>   The future battlefield itself depends very much on the concept of
>> anti-gravity. If it is invented (and within Traveller it is assumed so),
>> field artillery and infantry will rapidly decline in importance. Indeed,
>> infantry is losing importance even now, long before even air-cushion
>> combat vehicles have appeared.
>
>Why?  There are reasons why the infantry has to get out of the vehicles
>and fight on foot.  The only way anti-gravity will put an end to fighting
>on foot is if every soldier gets a grav-belt, and anyone with Striker will
>know what that will do to the unit's maintenance costs!

  With the widespread usage of rapid-firing laser guns (say, the Traveller
equivalent of the 10Mw pulse laser) infantry - mounted, dismounted or with
grav-belts - shall become very vulnerable. A phalanx arrangement of ten or
so vehicles, carrying three to five such guns will probably deny the area to
anything but other vehicles.

>>   Infantry shall continue to be used in city assaults, police and
>> security work, shipboard actions and heavily broken areas combat.
>
>The first and last of those come under the heading of "Getting stuck in
>and capturing the real estate".  Assuming you actually want control of the
>planet, you're going to have to take control of the cities, which means
>city assaults.  If the cities have been bombarded, it means broken areas
>combat.

  Granted, see above.

>> Artillery shall probably lose all almost all use except for the most
>> rapid-firing cannon in light anti-vehicle combat.
>
>Certainly it is true that at higher tech levels, you can build vehicles which
>are invulnerable to any practical conventional CPR or mass-driver round.
>So long as the infantry stay in their heavily armoured APC's, or in their
>bunkers, they are safe.  (And so long as someone doesn't let off some nuclear
>rounds.)  Artillery will still be a good way of keeping their heads down, and
>weakening their morale.

  Area denial is granted, space denial is not. If there is precious little
infantry, artillery shall almost disappear.


Marc A. Volovic

#2659 Re: YACOPI (Yet Another Comment On Planetary Invasions)

Marc Alexandrovich Volovic [email removed] writes:
> Adrian Hurt [email removed] writes:
> >Marc Alexandrovich Volovic [email removed] writes:
> >>					 There may be 5 Atlantis battleships
> >> (Robert Dean's Prize Baby :-) in a star system, but a mixed force can
> >> outmaneuver it and perform a planetary landing.
> >
> >Perhaps, but there had better be something that can take out those 5 Atlantis
> >class battleships, or at least keep all 5 occupied for a long time, or else
> >at least one battleship will come and make the invasion very costly.
>
>   Granted, partially. However, it may be possible to take out the Atlantis
> sized ships with ramming drones. Does it matter how much damage the Meson-T
> can do on it - anything short of "Ship Vaporized" will still propel a drone
> at a high speed into the ship.

Can the ramming drones be destroyed or disabled with lasers or missiles?
If not, they count as "something that can take out those 5 Atlantis class
battleships".  The point I was making was, if even one of the battleships
can make its way to the invasion area, the invasion is in big trouble.  I
was not commenting on how you stop them, only that you need to do so, as
opposed to just going round them (outmanoeuvre and perform a planetary
landing).

> >The whole assumption in this discussion is that for some reason, the attacker
> >can not/does not want to destroy the defender totally in this manner.  (Why
> >was such a tactic never used during any of the Frontier Wars, by the way?)
> >Otherwise, if the attacker finds himself faced with an unbeatable defence
> >at any stage, he can just give up, take off and nuke the planet from orbit.
>
>   I assume the following - Steve Kellog suggested a possible way to
> obliterate (or, at the very least, heavily damage) any planet by a single
> Type S scout. This is a tactic employable by any starfaring nation. The
> only possibility is to have it mutually proscribed, the same going for
> planetary bombardment to destruction. Otherwise - better not speak, eh?

In other words, for some reason, the attacker can not/does not want to destroy
the defender totally.

> >Why?  There are reasons why the infantry has to get out of the vehicles
> >and fight on foot.  The only way anti-gravity will put an end to fighting
> >on foot is if every soldier gets a grav-belt, and anyone with Striker will
> >know what that will do to the unit's maintenance costs!
>
>   With the widespread usage of rapid-firing laser guns (say, the Traveller
> equivalent of the 10Mw pulse laser) infantry - mounted, dismounted or with
> grav-belts - shall become very vulnerable. A phalanx arrangement of ten or
> so vehicles, carrying three to five such guns will probably deny the area to
> anything but other vehicles.

The same can be said nowadays about machine-guns.  They're why the infantry
tends to ride around in APC's.  Even so, there is still infantry around.

- - --
 "Keyboard?  How quaint!" - M. Scott

 Adrian Hurt			     |	JANET:  [email removed]
 UUCP: ..!ukc!cs.hw.ac.uk!adrian     |  ARPA:   [email removed]