Operation Hammer
The Americans decided to change Operation Lobster, after realizing that the operation could last till 1919. They decided to launch an attack on Veracruz and from there seize Puebla, a route used by many invaders over the past 400 years. The Americans had not planned on attacking Veracruz, thinking the war would end quickly. Once it became clear that it wouldn't the Americans still didn't act. Amphibious assaults are harder than land assaults and the Americans feared massive casualties. General Leonard Wood was the one who persuaded the American commanders to attack Veracruz. The Mexicans figured the Americans would attack at the beginning of the war and sent thousands of troops there. After a while Veracruz became a secondary priority. Men and material were moved north and by March 28th (the invasion day) there were only 25,000 Mexican soldiers in Veracruz. Most units were at half strength, and some were at as little as one third the strength. 1 in every 12 artillery pieces was a Quaker Gun. The American planners figured it would take 4-12 days to take Veracruz. The operation was called Operation Hammer.
On March 28th several American ships arrived in Veracruz. North of the city some 30,000 troops landed. Only 14,000 Mexicans were sent to fight them. For the Mexicans it was a terrible ordeal. The American artillery tore massive holes in their lines. After a while the Americans noticed that the Mexican artillery wasn't firing back at them and they decided to charge. The Mexicans fled and were quickly surrounded.
In the Bay of Veracruz the Americans stopped their ships. The guns of the ships were trained on the city and began firing. The Mexican artillery near the bay were destroyed and the city was turned into a burnt out wreck while the rest of the Mexican guns fired impotently. 10,000 troops, led by the Marines and commanded by General Leonard Wood, landed at dusk. The Mexicans tried fighting street to street, but were pushed back. The Americans to the north also neared the city. The Mexican attack turned into a route and only 2,000 Mexicans escaped.
Since the Mexican Army in Veracruz was virtually destroyed the Americans were able to capture areas as fast as they were able to march. By April 21st the Americans had captured Cordoba and Orizaba and were moving on Puebla. The port of Veracruz had been destroyed by the Mexicans and thus it was difficult to get supplies for the army and the advance stalled. This allowed the Mexicans to move 35,000 men under General Adolfo de la Huerta to Puebla.
The defeats of the past year had not been very good for Carranza. The defeats had horribly damaged the Mexican Army and he was very unpopular in Mexico. On April 28th de la Huerta, Obregon, and Pablo Gonzalez Garza announced that they would no longer fight unless Carranza left office. Carranza tried to arrest Obregon, but that failed and the garrison in Mexico City arrested Carranza. He was allowed to leave the country for Costa Rica, which later proved to be a major mistake.
Once the Americans got supplies the campaign started again. Despite the Mexicans' best efforts the Americans were able to reach the outskirts of Puebla by May 30th. The Mexicans still held the volcanic mountain La Malinche. From there the Mexicans were able to shell the American lines and make any entry into Puebla costly. On May 2nd the Americans seized the foothills near the settlement and tried to attack. It was raining heavily and the Americans struggled through the mud. Artillery shells screamed through the sky at all hours and killed many Americans. Try as they might the Americans could not break the Mexican lines.
General Wood recognized that the Americans might not be able to conquer La Malinche so he decided to take Puebla. On May 12th the army was divided into 3 parts, one to take the town, the other to attack La Malinche as a distraction, and a small force to go around the mountain and take Tlaxcala. A massive artillery barrage preceded the attack on Puebla. The first Americans to arrive in the city met some snipers and light machine guns, which killed 30 of them. “This,” one Marine recalled, “made it personal for some reason.” The enraged Americans stormed through the city, shooting up every building and breaking the Mexican defenses. Surrounded Mexicans fought desperately, in some cases holding off forces three times their size for several hours. In the fury a house caught fire, which quickly spread throughout Puebla. In the inferno de la Huerta was unable to move out of the city and was surrounded by the Americans. After he was surrounded de la Huerta decided to go out in a blaze of glory; he charged the American troops and was riddled with bullets.
Lt. Colonel Ted Roosevelt (son of the President) led the attack on Tlaxcala. He and 2,000 men moved around the mountain and reached Tlaxcala at dusk on the 14th. 2,000 Mexicans were also in Tlaxcala. The fighting was quick, with the Americans charging and breaking the through the Mexican line. As the Mexicans retreated Roosevelt charged with his men and chased them down. Some Mexicans were cornered and decided to fight, with one of them shooting and killing Roosevelt. (Two Roosevelt children were killed: his brother Archibald had been killed in Tampico)
Once Puebla fell the Mexican troops on La Malinche panicked. Their avenues of escape were almost completely cut off and they were running out of artillery shells. On the 16th the American army launched another attack. The Mexicans simply broke and ran, routing off the hills. Most were caught and forced to surrender and all of their machine guns and artillery were captured.