This sound is from Pikeman - Kingdom: Two Crowns - Units (Nintendo Switch)

A tercio (pronounced Spanish for "[a] third") was a military unit of the Spanish Army during the reign of the Catholic Monarchs and the Spanish Habsburgs in the early modern period.
See also: New Model Army, Huntingdon and Peterborough, Honourable Artillery Company, Battle of Dunbar (1650), Irish Rebellion of 1798, Battle of Inverkeithing.