could you mention a war that it participated in?
It didn't participate in any war.
ARA Moreno
uring this time, "Moreno" was employed little as Argentina was neutral. 
what is ara moreno? It was a dreadnought battleship. to which country did it belong? Argentina. does it have a naval force? Yes, the Argentine Navy ("Armada de la República Argentina").
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ARA Moreno [SEP] Introduction
After "Moreno" was completed in March 1915, a series of engine problems occurred during the sea trials which delayed its delivery to Argentina to May 1915. The next decade saw the ship based in Puerto Belgrano as part of the Argentine Navy's First Division before sailing to the United States for an extensive refit in 1924 and 1925. During the 1930s the ship was occupied with diplomatic cruises to Brazil, Uruguay, and Europe until the Second World War broke out. During this time, "Moreno" was employed little as Argentina was neutral. Decommissioned in 1949, "Moreno" was scrapped in Japan beginning in 1957.