11th ohio cavalry

During the Civil War, varying companies of soldiers from five states served at Fort Halleck on the Overland Trail in what’s now south-central Wyoming. They defended stagecoach stations, passengers, freighters and emigrant trains. Some died in blizzards, some witnessed a legal hanging and some lynched an African-American ambulance driver.

Deep, crystal-clear waters with snow-capped views greeted emigrants as they arrived at the final crossing of the Sweetwater River near South Pass. At times, hundreds of travelers waited impatiently for makeshift ferries, hoping to outrun the cholera they feared was being carried toward them by parties farther back along the trail.

Two battles on July 26, 1865 near Platte Bridge Station near present-day Casper, Wyo., are best understood in the context of tribal response to the Sand Creek Massacre the previous November. Twenty-eight U.S. troops were killed that day including Lt. Caspar Collins, for whom Fort Caspar and the town of Casper were later named.