Upon his return to Mexico in 1908, Hill was named a
regidor (city councillor) in
Navojoa, Sonora. When Madero was trying to consolidate his hold, he placed Hill as commander of
Cananea, a place of labor unrest. Hill "a combination of resolve and conciliation averted trouble." In 1912, he fought against the rebellion led by
Pascual Orozco and, following the 1913
coup d'état of
Victoriano Huerta, he joined the northwestern corps of the
Constitutionalist Army, which would ultimately be commanded by his kinsman
Álvaro Obregón. He fought alongside Obregón in the campaigns against
Francisco "Pancho" Villa in the
Bajío. He served as Governor of Sonora from 12 August 1914 until 6 January 1915. Hill was an extremely able Constitutionalist Army commander, put in charge of Mexico City in 1915. Following the victory of
Venustiano Carranza's Constitutionalist Army, whose most distinguished general was his relative Álvaro Obregón, Hill was promoted to
Divisional General. Obregón had returned to Sonora after Carranza's election, but announced his candidacy for the 1920 presidential elections in which Carranza was constitutionally unable to run. However, Carranza designated
Ignacio Bonillas as his candidate for the presidency. Hill, Obregón,
Plutarco Elías Calles, and
Adolfo de la Huerta formed a plan in 1920 against Carranza's plans. Hill was one of the main proponents of the
Plan of Agua Prieta, fighting in the military rebellions that ensued. Hill and other former Constitutionalists accompanied Obregón on his triumphal entry into Mexico City. When Obregón assumed the
presidency on 1 December 1920, he appointed Hill as his
Secretary of War and the Navy. He was seen as a potential presidential successor to Obregón, which brought him into conflict with
Interior Secretary Plutarco Elías Calles. ==Death and legacy==