View source for Inner Sphere at War

The '''Inner Sphere at War''' (ISW) steps the [[BattleTech]] experience up to conflicts at the interstellar level. With these rules players can refight campaigns such as the [[Marik Civil War]], the Andurien-Canopian Invasion or even restage entire [[Succession Wars]], at a level involving hundreds of worlds and regiments. 

Though the ISW rules emphasize military action, they also incorporate economic and political aspects of running a star-spanning faction, all of which may play a role in the campaign. Inner Sphere at War is designed for play as a stand-alone game or in conjunction with more detailed BattleTech tactical systems, from [[A Time of War]] RPG to [[Strategic BattleForce]].

While these rules attempt to capture the basics needed to run a campaign, they serve as a framework around which players may construct a campaign spanning just a few worlds, or all 2,000-plus worlds in the BattleTech universe. The size and scope of a campaign is left up to each player and player group. The considerable wealth of information concerning the various worlds, factions, factories, forces, and more{{m}}published in numerous BattleTech sourcebooks and novels{{m}}provide players with the tools they need to design campaigns of virtually any type and size. 

== The Playing Field: the Inner Sphere Interstellar Map==
The playing field for the Inner Sphere at War campaign. An interstellar map for a given campaign can range from a small section of space, such as the [[Andurien]]/[[Capellan]] border, to the entire [[Inner Sphere]].

== Core Rules ==
The ISW core rules are detailed in ''[[Interstellar Operations]]'' (CAT35006), pp. 274-313. The rules for Strategic Battleforce are also in ''Interstellar Operations'' (pp. 160-230). Finally, ''Interstellar Operations'' also contains the rules for the [[Abstract Combat System]] (pp. 234-255).

== Expansion Rulesets ==
ISW expanded rules can be found in the following books:
* ''[[First Succession War (sourcebook)]]''
* ''[[Second Succession War (sourcebook)]]''

== Game Resources ==
Three maps with the interstellar hex system described in ISW were released by [[CGL]]:
* [http://bg.battletech.com/download/BattleTech%20Inner%20Spher%20at%20War%202786.pdf Inner Sphere at War Hex Map: 2786]
* [http://bg.battletech.com/wp-content/uploads/2011/10/ISAW_HexMap_IS_2830.pdf Inner Sphere at War Hex Map: 2830]
* [https://bg.battletech.com/download/BattleTech%20Inner%20Spher%20at%20War%203025.pdf Inner Sphere at War Hex Map: 3025]


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