Upon her return, "Minnesota" was assigned to the Atlantic Fleet. She spent the following three years on the eastern coast of the United States conducting a peacetime routine of training cruises, apart from one voyage to the English Channel. Starting in 1912, the ship began to operate in the Caribbean, particularly after unrest began to break out in several countries in the region. For the first six months of 1912, she patrolled Cuban waters; she went to the US base at Guantanmo Bay to support the suppression of an insurrection on the island from 7 to 22 June. In mid 1913, she patrolled the eastern coast of Mexico during the Mexican Revolution. She returned in 1914, with stints there from 26 January to 7 August and 11 October to 19 December. During the first period, the United States occupied Veracruz to protect US interests. In 1915, "Minnesota" returned to the United States and resumed her previous routine of training exercises with occasional cruises to the Caribbean. In November 1916, she was placed in reserve as the flagship of the Reserve Force, Atlantic Fleet.