Cantonment Martin - Credit: Wikimedia Commons
Cantonment Martin was intended to be a temporary Army camp to provide support for an engineering expedition led by Stephen H. Long. Possibly the first troops marched from St. Louis, Missouri, to what is now the western border of Missouri. The troops, commanded by Capt. Wyly Martin, established a post that was probably on the northwest section of Cow Island, because of abundant cottonwood timber there.Mary Meyers, "Cow Island: A 'mooving' area history," The Atchison Globe, June 28, 2010, p. 3. Read more on Wikipedia
Source: en.wikipedia.org