The country reconquered the territory lost in the previous war.
Examples of reconquer
reconquer
In 468, Leo unsuccessfully attempted to reconquer North Africa from the Vandals.
From the en.wikipedia.org
A full-scale invasion was planned and a large force was sent to reconquer Syria.
From the en.wikipedia.org
The French would not reconquer the Austrian Netherlands until the summer of 1794.
From the en.wikipedia.org
The Habsburgs believed the time was ripe to reconquer Hungary and possibly Belgrade.
From the washingtontimes.com
In 1450, however, Giovanni I del Carretto was able to reconquer his capital.
From the en.wikipedia.org
Mussolini vowed to reconquer all of Hobyo and move on to Majertin by any means necessary.
From the en.wikipedia.org
In 1240, Trencavel's son tried to reconquer his old domain but in vain.
From the en.wikipedia.org
John had plans to reconquer all the Crusader states, but he died in 1143.
From the en.wikipedia.org
Some said they were going to help the Georgians reconquer the region.
From the economist.com
More examples
Conquer anew; "The country reconquered the territory lost in the previous war"
(Reconquest (Chile)) Chilean War of Independence was an armed conflict between pro-Independence criollos who sought political and economic independence from Spain and royalist criollos, who supported the continued allegiance to and permanence within the Spanish Empire of the Kingdom of Chile. ...