War is the continuation of politics by other means. - Carl von Clausewitz

"War" is defined as an organised, armed conflict between two or more states, alliances or similar entities.
Warfare in the 6th millenium CE can be divided into several types according to the scale of the conflict. Larger scale conflicts will often feature campaigns, battles or missions that can themselves be considered a conflict in their own right, fitting on a lower rung on the list below.

World Wars

World Wars are wars fought on a single planet, moon, or other celestial body by parties already based on that world and with little to no access to off-world assets. While generally regarded as insignificant compared to interstellar wars due to the small area they cover, world wars are often far more brutal than these larger conflicts because all parties can bring the lion's share of their armed forces to bear in a comparatively short time period. Another consequence of all involved parties sharing a world is that strategically significant targets such as government seats, industrial or population centers, military bases etc. are always within range of ballistic missiles or similar intercontinental weapons. The various parties are often also connected to the same Worldnet, leading to information warfare playing a large role. A world war can leave an entire world crippled in terms of population, industrial capacity, and in some cases habitability.

World Wars are generally only fought on frontier colonies due to the pre-requisite of having two or more sovereign states without major off-world holdings on a single celestial body. Large revolutions on a single-world nation may also be classed as a world war in some scenarios.

Pages relevant to world wars:

Notable examples:

  • World Wars I and II

System Wars

System wars are wars fought on and around multiple bodies within a single solar system. The nature of these wars is extremely dependant on the available tech base, the proximity of the belingerent worlds to each other, the habitability of those same worlds, and the goal of the war. In the case of a genocidal war between proximate bodies, a WMD arms race has generally occured beforehand, and the war will likely be effecitvely decided within the first few minutes, if not before the first shot is fired. If the goal is to capture and subjagate a world with most of its infrastructure intact, extensive fighting for orbital superiority will be common, as well as hit-and-run raids on supply depots, off-world operations, etc. Although landing troops is not nearly as prohibitively expensive and difficult as it is in interstellar warfare, it is in many cases still very difficult to overcome local forces without extensive use of orbital bombardment. Troops that are landed usually focus on capturing government and industrial centers. Information Warfare is less feasible on this scale, but latencies are often low enough for it to be a valuable tool. System wars can be as destructive as world wars, due to the ample space to manouvre, front lines rarely exist, and thus nowhere is safely 'behind lines'.

System wars are common for civilisations in the late stages of colonising their home system, as colonies revolt against the homeworld. This is not limited to birthworlds, slowboat-based and other isolated colonies may encounter similar situations.

Pages relevant to System Wars:

Notable examples:

Interstellar Wars

Interstellar wars are wars fought over an area spanning two or more star systems. The means by which they are fought are similar to System wars, but with far more emphasis on ftl travel, acquiring accurate star charts of hostile space, and predicting and intercepting hostile scouting attempts. Depending on the size, shape and relative position of the beligerents, an identifiable front line may form, as patrols and rapid response forces make it prohibitively difficult to accurately jump close to a target, and make it prohibitively dangerous to jump in too far away from a target. If the contested space is large enough, communications delays may begin to play an important role, allowing rapid deep strikes to arrive at their target before the news of them breaking through the front line.

This is the smalest scale of warfare on which glassing and similar techniques are employed. Interstellar wars generally focus on destroying the other side's ability to function as a coherent nation, so that individual systems and worlds may be secured one at a time by vastly overwhelming forces.

Galactic Wars

Galactic war is a somewhat vague definition, generally a war is not called galactic unless it involves beligerents from at least two spheres, although wars fought between galactic arms may also be classed as galactic. Due to the enormous scale, communication, and travel times become enormous. Focus tends to lie on securing wormholes, safe rapid travel corridors, and simply out-producing the other side. Re-supply, coordination and exhaustion play a major part in who wins a war on this scale, with overextension being one of the biggest threats the attacker can face.

To date, only a single such war has been fought.