When the war of 1812 broke out, the British needed the help of the Anishinabek due to their extensive knowledge of the land and waters. About 2000 Anishinabek warriors from north of Lake Superior, Lake Huron and Odawa Mnisiing volunteered their service to not only oblige their alliance with the British, but to protect their territory as well from American encroachment. One of the most notable warriors from Odawa Mnisiing was Chief Mookmaanis of Wiikwemkoong. Due to his efforts in the war he was awarded a Silver Sword on behalf of the British Crown.
With the end of the War of 1812, the Anishinabek of Odawa Mnisiing would return to their territory to live in peace. However, the arrival of more European settlers looking for a fresh start in North America would begin another territorial engagement.
In 1830, US president Jackson issued the ‘Indian Removal Act’, leading to the 1833 Treaty of Chicago, which was ratified in 1835. During this time the U.S. government forced the Pottawatomi and neighbouring tribes to sell their land. More than 3,000 Anishinabek consequently left their homelands and Pottawatomi families began to arrive in Canada around this time.