Modern warfare
This developed in the Vietnam War into riverine warfare (brown water navy), in intertidal and river areas. Irregular warfare makes this sort of combat more likely in the future.

Network-centric: Network-centric warfare is essentially a new military doctrine made possible by the Information Age. Weapons platforms, sensors, and command and control centers are being connected through high-speed communication networks. The doctrine is related to the Revolution in Military Affairs debate.
The overall network which enables this strategy in the United States military is called the Global Information Grid.

New generation: New generation warfare is a Russian military theory of unconventional warfare based on the Gerasimov doctrine which prioritizes the psychological and people-centered aspects over traditional military concerns, and emphasizes a phased approach of non-military influence such that armed conflict, if it arises, is much less costly in human or economic terms.

Nuclear: Nuclear war is a type of warfare which relies on nuclear weapons. There are two types of warfare in this category. In a limited nuclear war, a small number of weapons are used in a tactical exchange aimed primarily at enemy combatants. In a full-scale nuclear war, large numbers of weapons are used in an attack aimed at entire countries. This type of warfare would target both combatants and non-combatants.

Space: Space warfare is the hypothetical warfare that occurs outside the Earth's atmosphere. As of 2023, no wars have been fought here yet. The weapons would include orbital weaponry and space weapons. High value outer space targets would include satellites, military satellites and weapon platforms. Notably no real weapons exist in space yet, though ground-to-space missiles have been successfully tested against target satellites. As of now, this is purely science fiction.

Modern wars: 

Lists: List of wars 1800–1899
List of wars 1900–1944
List of wars 1945–1989
List of wars 1990–2002
List of wars 2003–present
List of ongoing armed conflicts
List of modern conflicts in the Middle East

Major modern wars: 

== References ==