1876
Battle of the Rosebud
The setting
Rosebud Creek, Montana Territory
Rolling open hills and ravines along Rosebud Creek
Reveal the outcome
Recorded sideLakota and Northern Cheyenne
Recorded resultTactical success / forced enemy withdrawal
Indecisive in casualties but a strategic Native success: Crook's aggressive Native attackers fought his column to a standstill and forced it to withdraw to resupply.
How the atlas explains it
Aggressive, mobile mounted attacks and use of broken terrain prevented Crook from pressing forward; the disruption removed his column from the converging campaign.
What followed
By knocking Crook out of the campaign, the Rosebud left the other columns unsupported eight days before Little Bighorn.