| Date in 1848 |
Event |
| January 12 |
Landing party (Lt. Frederick Chatard, USN) from the storeship Lexington and bark Whiton destroyed guns at San Blas and cut out two schooners |
| January 17 |
Landing party (Lt. Frederick Chatard, USN) from the bark Whiton spiked guns at Mazanillo, Mexico |
| January 18 |
Storeship Lexington seized two schooners at San Blas |
| January 22 |
Americans commenced second siege of San Jose del Cabo |
| January 30 |
Landing party (Lt. Tunis A. M. craven, USN) from the sloop Dale attacked Mexican camp at Cochori, Mexico |
| February 2 |
Treaty of Guadalupe Hidalgo signed |
| February 13 |
Landing party (Lt. Fabius Stanly, USN) from the sloop Dale attacked the Mexican camp at Bocachicacampo |
| February 15 |
The sloop Cyane lifted the siege of San Jose del Cabo |
| February 18 |
Gen. Winfield Scott relieved as commander of the army in Mexico by Maj. Gen. William O. Butler |
| February 20 |
Landing party (Lt. Fabius Stanly, USN) from the schooner Libertad destroyed the Mexican camp at Bocachicacampo |
| February 29 |
Armistice agreed upon for the Valley of Mexico |
| March 10 |
Treaty of Guadalupe Hidalgo ratified by the U. S. Senate |
| March 24 |
Cdr. Samuel F. DuPont, USn led an expedition to Santa Anita, Baja California |
| March 25 |
Capt. Seymour G. Steele and a detachment of New York Volunteers attacked the Mexican camp at San Antonio, Baja California, winning the release of Passed Midshipmen Alexander F. Warley and James M. Duncan and three seamen |
| March 30 |
Commo. Shubrick receives word of the armistice |
| March 31 |
Lt. Col. Henry S. Burton attacked the Mexican camp at Todos Santos |
| April 9 |
Lt. Fabius Stanly, USN and a small detachment skirmished with Mexicans near the estuary of the Soldado River |
| May 30 |
Treaty of Guadalupe Hidalgo ratified by the Mexican Congress |
| June 11 |
Vera Cruz returned to Mexican authorities |
| June 15 |
Commo. Perry, in the frigate Cumberland, departs Vera Cruz for New York |
| June 17 |
Mazatlan returned to the Mexicans |
| June 24 |
Guaymas returned to the Mexicans |
| July 15 |
Last U. S. troops, under Gen. William J. Worth, leave Vera Cruz |
| August 31 |
La Paz returned to the Mexicans |