He was put in command of the 3ª Escuadrilla de Moscas and participated in the battles of the Levante and Ebro. This squadron achieved the most aerial victories during the Levante Campaign, with 10 credited to Bravo. On 27 August 1938, he became the adjutant of Grupo 21 de Caza (under the command of Manuel Zarauza Clavero and composed of I-16 fighters) at only 22 years old. The Republican defeat at the Ebro made imminent Republican defeat inevitable and the Catalonia Offensive forced the remaining Republican pilots to flee to France, Bravo among them. He was credited with 23 individual aerial victories achieved during 160 aerial combats and 1200 flying hours. He flew the I-16s marked "CM-193" y "CM-249".