Otho B. Rosenbaum was a career officer in the United States Army. A veteran of the Spanish–American War, Philippine–American War, and World War I, he served from 1894 to 1935, and attained the rank of brigadier general. Rosenbaum's command assignments included the 173rd Infantry Brigade, 155th Infantry Brigade, and 3rd Division, and his awards and decorations included the Silver Star.

Marion is a town in, and the county seat of, Smyth County, Virginia, United States. It is positioned upon Interstate 81, in the Blue Ridge portion of the Southern Appalachian mountains in Southwest Virginia. The town is named for American Revolutionary War officer Francis Marion. The town limits had a population of approximately 6,000, per 2020 Census estimates. However, together with the neighborhoods, an additional 9,000 residents residing in unincorporated Smyth County have Marion mailing addresses, granting the Marion, VA ZIP code (24354) a total population of about 14,500, which is around half of the county's total population.