{{Short description|Type of military victory}} {{redirects|Decisive Battle|the piece of music|Music of Neon Genesis Evangelion}} {{War}}

A '''decisive victory''' is a military victory in battle that definitively resolves the objective being fought over, ending one stage of the conflict and beginning another stage. Until a decisive victory is achieved, conflict over the competing objectives will continue.

== Definitions == The phrases "decisive battle" and "decisive victory" have evolved over time, as the methods and scope of wars themselves changed. More modernly, as armies, wars and theaters of operation expanded{{mdash}}so that the gestalt (''i.e.'', a result which is greater than the sum total{{mdash}}see synergy) of the overall venture was more definitive{{mdash}}the phrase "lost its meaning."<ref>{{cite encyclopedia |url=http://encyclopedia2.thefreedictionary.com/Decisive+Battle |title=Decisive Battle |encyclopedia=The Great Soviet Encyclopedia |edition=3rd (1970-1979) |year=2010 |location=Farmington Hills, Michigan|publisher=The Gale Group, Inc. |via=The Free Dictionary |access-date=December 10, 2016 |quote=[Originally], a concept current in the art of war from the 18th to the early 20th century, which was understood to be the armed clash between the main forces of the belligerent sides that decided the course of a war or campaign or that caused a radical turning in the course of military action.}}</ref> The meaning is ephemeral, like the difference between “strategy” and "tactics”.<ref>{{cite book |url=https://books.google.com/books?id=pdqLiCvz60AC&q=decisive+loss+meaning&pg=PA50 |pages=49–52 |title=Decisive Warfare: A Study in Military Theory |first1=Reginald |last1=Bretnor |isbn=9781587152481|publisher=Wildside Press |date=February 1, 2001 |edition=New |access-date=December 10, 2016}}</ref>

In ''Defining and Achieving Decisive Victory'', Colin Gray defined an ''operational'' decisive victory as "a victory which decides the outcome to a campaign, though not necessarily to the war as a whole".<ref name="Ref_">Gray, p. 11.</ref>

The Battle of Midway is often cited as a decisive operational victory for the US despite the fact that the Pacific War ended more than three years later with the decisive ''strategic'' victory of the atomic bombings of Hiroshima and Nagasaki, which directly led to the Japanese surrender; this is because the Midway operation represented the destruction of the majority of the IJN's offensive carrier forces, which decisively stopped both the IJN's string of unbroken victories in combat and their plans to expand eastward into Midway Island, Hawaii, the Aleutian Islands and potentially the US mainland. During this period, the US Navy expanded greatly, and the IJN was never able to regain their former strength, making the victory decisive in terms of determining the future operational shape of the battles for the Pacific.

On the tactical scale, the attack on Pearl Harbor is cited as a decisive victory, as it destroyed the entirety of the US Pacific battleship fleet and neutralized Pearl Harbor's ability to retaliate in one fell swoop, thus resolving the issue of whether the battleships (which the Japanese inaccurately saw as the greatest threat) would present a threat to Japanese expansion in the West. A tactically decisive victory is no substitute for a decisive victory on a larger scale, since the strategic issue of control of the Pacific remained very much in question, and the war was later resolved decisively in the Allies' favor (see above) via aircraft carriers and bombers instead of battleships.

Writing in ''Military Review'', Thomas Goss attributes the popularity of the closely related term "decisive battle" to Sir Edward Creasy and his 1851 book, ''The Fifteen Decisive Battles of the World''. Goss recounts a variety of different definitions for the term used by historians and military leaders (neither of which typically define the term before using it): a battle that (1) achieves its operational objectives; (2) ends the conflict because one side has achieved its strategic objectives, or; (3) directly ends the conflict and results in a lasting peace between the belligerents. He concludes that "A decisive battle must directly lead to a rapid resolution of the contested political issues because the results on the battlefield caused both sides to agree that a decision had been reached."<ref name="Ref_a">Goss, pp. 11, 16.</ref>

Admiral Mahan emphasized that naval operations were chiefly to be won by decisive battles and blockade.<ref>{{cite web |url=https://www.usnwc.edu/getattachment/85c80b3a-5665-42cd-9b1e-72c40d6d3153/NWC-1005-NAVAL-CLASSICAL-THINKERS-AND-OPERATIONAL-.aspx |title=Naval Classical Thinkers and Operational Art |year=2009 |first1=Dr. Milan |last1=Vego |publisher=Naval War College |page=4 |archive-url=https://web.archive.org/web/20170628074041/https://www.usnwc.edu/getattachment/85c80b3a-5665-42cd-9b1e-72c40d6d3153/NWC-1005-NAVAL-CLASSICAL-THINKERS-AND-OPERATIONAL-.aspx |access-date=December 12, 2016|archive-date=2017-06-28 }}</ref>

==See also== *Kantai Kessen * Pyrrhic victory * Strategic victory * Tactical victory * Edward Shepherd Creasy, ''The Fifteen Decisive Battles of the World: from Marathon to Waterloo'' (1851)

== References == === Notes === {{Reflist}}

=== Bibliography === * Goss, Thomas J. [http://usacac.leavenworth.army.mil/CAC/milreview/download/English/JulAug04/goss.pdf "Gettysburg's 'Decisive Battle'."] {{Webarchive|url=https://web.archive.org/web/20110718194420/http://usacac.leavenworth.army.mil/CAC/milreview/download/English/JulAug04/goss.pdf |date=2011-07-18 }} ''Military Review'' (July–August 2004): 11–16. * {{citation |last=Gray |first=Colin |title=Defining and Achieving Decisive Victory |url=https://books.google.com/books?id=3j5rW0GYzzEC&q=Defining%20and%20Achieving%20Decisive%20Victory&pg=PR1 |year=2002 |publisher=DIANE Publishing |isbn=978-1-4289-1092-8}}

{{DEFAULTSORT:Decisive Victory}} Category:Military strategy