violent territorial, religious and military armed rebellions, which required the new Air Force to quickly deploy support wherever the federal army requested them. These conflicts were resolved mostly by the assertive use of air superiority alone. On December 7, 1923, former President Adolfo de la Huerta launched a military coup (delahuertista rebellion) against the government of President Álvaro Obregón. The situation was extremely critical, because along with de la Huerta, about 60% of the army revolted, including various high-ranking generals across the country. The power tilted back in favor of the federal forces when the United States agreed to furnish the Mexican government with a fleet of new de Havilland DH-4B aircraft equipped with the Liberty motor, armed with Lewis and Vickers machine guns and able to carry bombs. The military coup was suffocated by February 1924. In 1925, due to the shortage of airplanes caused by World War I, Mexico set up the National Aviation Workshops (TNCA) to design and build its own airplanes and aeroengines. A territorial war was that of the Sonora Yaqui Indians who demanded by force that previous territorial treaties were implemented. The conflict lasted from 1926 to 1927, and it came to an end when a new treaty was implemented. When President Plutarco Elías Calles pushed for the creation of the 'Mexican Apostolic Catholic Church', independent of Rome, it unleashed a widespread religious war known as the Cristero War. This long civil war lasted from 1926 to 1929. In May 1927, while General Obregón seemed keen to impose the presidency to General Calles, General Arnulfo R. Gómez launched a military coup against both Obregón and Calles. His command posts were located in the cities of Puebla and Veracruz, where he led approximately 200 federal deserters, ammunition and weapons. The air force played a key role in their defeat. Then, on March 3, 1929, a serious military coup took place, led by General José Gonzalo Escobar and heeded by various other generals. In these days, the air force's remaining airplanes consisted of worn and shot Bristol F.2 Fighter, Bristol Boarhound, de Havilland DH-4B and Douglas O-2C, a force that was not suitable to defeat Escobar's power. In this context, the Mexican government convinced the U.S. government to promote the peace south of its border and quickly make available twelve new OU-2M Corsair with the 400 hp Wasp engine, nine Douglas O-2M, four Stearman C3B and