Fort Benson was a Fort built in 1856 in present-day Colton in San Bernardino County, California. The Fort is named for its builder, Jerome Benson. The Fort was abandoned a year after it was built in 1857. Fort Benson was designated a California Historic Landmark on September 11, 1957. Jerome Benson, in fear, built the Fort because of land disputes…Fort Benson was a Fort built in 1856 in present-day Colton in San Bernardino County, California. The Fort is named for its builder, Jerome Benson. The Fort was abandoned a year after it was built in 1857. Fort Benson was designated a California Historic Landmark on September 11, 1957. Jerome Benson, in fear, built the Fort because of land disputes. The fort on his land claim, was made of earthworks and wood. The fort was defended by a brass cannon. The fort was used only one year as about half the Mormons around his land were told to return to Utah during the Mormon War, also call the Utah War. On December 27, 1858, the US Army arrived into San Bernardino. The US Army's Mojave Expedition leader was Colonel William Hoffman. He placed troops in San Bernardino and Cajon Pass to deal with Indians and the land problems. Fort Benson is gone and only a marker is at the spot of the fort.