The Indian Expedition was a regiment of American Indians fighting​

The expedition included five white regiments, two Indian regiments.

Explanation:

he expedition camped at Locust Grove for two weeks, waiting for a Union supply train. One detachment from the main force moved on to Fort Gibson, causing the Confederates stationed there to withdraw. However, the Union supply train failed to arrive and supplies of food, forage and ammunition ran low.

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use wikipedia, i think they have this.