What was the role of the Chickasaw warrior in the War of 1812?

His role was to request aid from the tribe

Explanation:

Although much of the fighting of the War of 1812 was far from Chickasaw lands, the threat of a British invasion on the Gulf Coast prompted the Chickasaw agent to request military aid from the tribe. ... These militias mobilized for the Creek War and other battles and played a later role in the Battle of New Orleans

a big one is

to appoint and regulate officers of the land and naval forces,

which caused much controversy ending the articles