The Americans, however, had no intentions of letting the British Band escape. The "Warrior", a steamboat outfitted with an artillery piece, patrolled the Mississippi River, while American-allied Dakotas, Menominees, and Ho-Chunks watched the banks. On August 1, the "Warrior" arrived at the mouth of the Bad Axe River, where the Dakotas told the Americans that they would find Black Hawk's people. Black Hawk raised a white flag in an attempt to surrender, but his intentions may have been garbled in translation. The Americans, in no mood to accept a surrender anyway, thought that the Indians were using the white flag to set an ambush. When they became certain that the Natives on land were the British Band, they opened fire. Twenty-three Natives were killed in the exchange of gunfire, while just one soldier on the "Warrior" was injured.