 "I'll try, sir," became the 5th Infantry's regimental motto.The lineages of the units above that made up the 5th Infantry give the regiment campaign credit for the War of 1812.The 5th Regiment established headquarters at Detroit in 1815, and began a 30-year period in which it operated in the Upper Midwest, mostly in an area between the current states of Michigan and Nebraska, building and garrisoning a number of posts, protecting the great wave of settlers from native resistance, and serving as a first line of defense in case of another war with Great Britain.