On July 17, 1866, two soldiers and six wagoners were killed by Sioux Indians. In the next two weeks, 14 more men died in Sioux attacks. On December 21, disaster struck. Pursuing Indians across a wooded ridge, Brevet Lieutenant Colonel William Fetterman and his company fell into an ambush. This book details these events.

On July 17, 1866, two soldiers and six wagoners were killed by Sioux Indians. In the next two weeks, fourteen more men died in Sioux attacks. The attacks continued through the summer and fall. On December 21, disaster struck. Recklessly pursuing Indians across a wooded ridge, Brevet Lieutenant Colonel William Fetterman and his company fell into an ambush. It was the worst military blunder of the Indian Wars before the Battle of the Little Big Horn ten years later. Margaret Irvin Carrington, like many officers' wives, kept a journal of her stay in the outposts of the West. She recorded her impressions of the scenery and the inhabitants of Absaraka, in present-day Wyoming, Montana, and the western Dakotas. As the wife of the commander of Fort Phil Kearny, Colonel Henry B. Carrington, she experienced the sequence of events and the heightening of tensions that led to that bloody December day. She could not have known that her journal would come to such a shocking climax, with her husband's career at stake.