The Winnebago war was the response of a Winnebago (or Ho-Chunk) tribe to encroachment into their territory by miners, and rumors that their members were being executed, according to The Wisconsin Historical Society. Their skirmishes resulted in several deaths before the U.S. government prevailed, the speed of their success due in large part to persuading other tribes to remain neutral. All Ho-Chunk tribe members involved were imprisoned — most for the act of rebellion, but some for the explicit targeting of civilians. Most prominent among these individuals was Chief Red Bird, the supposed instigator of the war. 

Red Bird’s most infamous act was his assault on the home of local farmer Registre Gagnier. Gagnier and a farmhand were killed, while the former’s family just barely managed to escape (via HistoryNet). Although the chief died in prison, he was supposedly aided by other tribe members, including Wekau and Chickhonsic. These two men were the last of those imprisoned — they’d managed to escape execution as well. In 1828 President Adams ordered their pardon. He did so in the hopes of avoiding further uprising, as the issue of tribal members being executed was largely what ignited Native hostility. However, in exchange for the pardon, he stipulated that the tribe surrender enormous parts of their homeland, including the mining land in question. This act, along with the war itself, helped set a precedent for the later Indian Removal Act.