Born in Germany in 1851, he served as a Private, Company A, 5th U.S. Infantry. During the period of October 21, 1876 to January 8, 1877, Private Rodenburg served in a series of engagements against the Sioux Indians in the Montana Territory. In actions at Cedar Creek, Private Rodenburg personally helped in the security of settlers throughout the region. For extreme gallantry, he was awarded the Medal of Honor and promoted Corporal.