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| 1846 | Battle of Palo Alto USA Taylor, Zacharay |  |
| 8th Mar Palo Alto Defeats the Mexicans |
| 9th May Resca d'Palma Defeats the Mexicans |
| 1846 | Blockade of Rio Grande USA Edson, Alvin | |
| Rio Grande Forms a marine battalion which blockades the Rio Grande |
| 1846 | Capture of New Mexico USA Polk, James Knox | |
| 12th April Rio Grande Negotiations breakdown for the purchase of New Mexico |
| 12th April Rio Grande Orders USAtroops into the Rio Grande to acquire California for the Union |
| 1846 | Capture of Saltillo USA Taylor, Zacharay | |
| 16th Nov Saltillo Captures Saltillo |
| 1846 | Capture of Tampico USA Edson, Alvin | |
| 14th Nov Tampico Capures Tampico |
| 1846 | Declaration of War USA Polk, James Knox | |
| 13th May Formal declaration of war against Mexico |
| 12th April Rio Grande Orders USAtroops into the Rio Grande to acquire California for the Union |
| 1846 | Invasion of Mexico USA Scott, Winfield | |
| Tampico Mounts an invasion of Mexico from Tampico |
| 1846 | Invasion of Teaxas USA Taylor, Zacharay | |
| Texas Occupies Texas , starts the war with Mexico |
| 1846 | Siege of Bautista USA Edson, Alvin | |
| Bautista Carries out a succesful raid of the port of San Juan Bautista |
| Frontera Carries out a succesful raid of the port of Frontera |
| 1847 | Battle of Buena Vista USA Davis, Jefferson | |
| Buena Vista The riflemen & Indiana volunteers under Davis turn the course of battle into victory for the Americans by a bold charge under heavy fire against the Mexicans |
| 1847 | Battle of Buena Vista USA Taylor, Zacharay | |
| 23rd Feb Buena Vista Defeats Santa Anna at Buena Vista |
| 1847 | Battle of Cerro Gordo USA Scott, Winfield | |
| 18th April Cerro Gordo Defeats Santa Anna |
| 13th Sep Chapultepec Overcomes the fortress of Chapultepec the last obstacle before Mexico City |
| 8th Sep Molino del Rio Defeats Santa Anna |
| 1847 | Capture of Mexico City USA Nicholson, Augustus | |
| 14th Sep Mexico City Cuts down the Mexican colours & raises the Stars & Stripes |
| 1847 | Capture of Mexico City USA Terret, George | |
| 14th Sep Mexico City Breaks up a counter attack by the Mexican lancers before Mexico City is taken |
| 1847 | Capture of Vera Cruz USA Scott, Winfield | |
| 27th Mar Vera Cruz Captures Vera Cruz |