Strategic victory

Strategic victory
A strategic victory is a victory that brings long-term advantage to the victor and disturbs the enemy's ability to wage a war. When historians speak of a victory in general, they usually refer to a strategic victory. Usually it comes together with a tactical victory on the field that allowed to further progress the objectives of the campaign, but it is also possible for a tactical defeat to be considered a strategic victory because it managed to achieve other goals (e.g. by imposing so many casualties on the opposing side to cripple their advance, resulting in a Pyrrhic victory for the enemy).
Examples
Battle of Antietam, American Civil War: The battle itself was a tactical draw, as the Confederate Army of Northern Virginia under Robert E. Lee was forced to end its incursion into the North while the Union Army of the Potomac under George B. McClellan was unable to capitalize on its numerical advantage to destroy the Confederate army outright before the latter retreated back to Virginia. However, the battle provided an opportunity for President of the United States Abraham Lincoln to issue the Emancipation Proclamation, which prominently tied the issue of slavery to the war itself and made the prospect of British or French intervention in favor of the Confederacy much more remote as neither government could be seen as openly supporting a practice that both countries had themselves banned for years.
First Battle of the Marne, World War I: The Allied victory managed to stop the German advance towards Paris at the city's eastern outskirts and ended prospects for a quick defeat of France in the Western Front, resulting in the frustration of the German Schlieffen Plan and leading to the two-front war the Plan had sought to avoid.
Battle of Moscow, World War II: The successful Soviet defence of its capital.
Battle of the Coral Sea, World War II: Though the Imperial Japanese Navy sank more Allied naval vessels in the battle than they lost, the planned Japanese invasion of Port Moresby in New Guinea and Tulagi in the southeastern Solomon Islands was checked and the unavailability of two fleet carriers (thanks to this battle) that could have otherwise been used by the IJN at the Battle of Midway a month later contributed to the US' decisive victory in the latter, marking the high point of the extent of the Japanese Empire after which Japan would gradually retreat.
Tet Offensive, Vietnam War: Though the United States and South Vietnam recorded tactical victories as they were eventually able to repulse all of the Viet Cong's attacks during the offensive, the high-profile attacks greatly damaged the perception in the United States that the communists were being defeated since it was thought the VC were incapable of launching such an offensive. US public support for the war deteriorated and the US government began to draw down its involvement in the war as well as seek negotiations for a peace agreement.
Operation Flash, Croatian War of Independence: Was a brief Croatian Army (HV) offensive conducted against the forces of the self-declared proto-state Republic of Serbian Krajina (RSK) from 1–3 May 1995. The offensive occurred in the later stages of the Croatian War of Independence and was the first major confrontation after ceasefire and economic cooperation agreements were signed between Croatia and the RSK in 1994. The last organised RSK resistance formally ceased on 3 May, with the majority of troops surrendering the next day near Pakrac, although mop-up operations continued for another two weeks.
See also
Decisive victory
Tactical victory
Pyrrhic victory
References
Military strategy