The Soldier's Promise (American Post-Civil War Westerns)

After his service in the Union Army, Damon goes about to fulfill a promise to his dead brother-in-arms and return an heirloom to his lost kin. As he traverses the Oregon Trail, Damon meets Johanna, a widow whose life has been upended by desperadoes and Indians that Damon has become ensnared within. Despite the odds, Damon vows to fulfill his quest.