Davis County was named after Captain Daniel C. Davis, an officer in the Mormon Battalion. This group of 500 Latter-day Saint men volunteered in the mid-1800s to aid in the conquest of California during war with Mexico. The battalion, recruited during the Mormon Pioneer migration to Utah, participated in one of the longest marches in American military history, over 2,000 miles from Iowa to California. Though historic accounts on the "discovery" of Great Salt Lake differ, it is certain that during the early decades of the 1800s, a variety of explorers and mountain men visited the brine lake. In 1843, John C. Fremont came to the lake on a mapping expedition, earning the honor of having one of the lake's islands named for him. In 1845, Fremont returned to Great Salt Lake with another expedition and explored the lake's four major islands, including Antelope Island, now a Utah State Park offering many types of recreation and wildlife watching. History and culture are also abundant in Davis County with art centers, railroad and aerospace museums and many settlement-era collections.