Col. Wheeler interviews a gunnery sergeant at Camp Ramadi in Iraq where he was deployed as a field historian in 2006. Field historians are deployed with Marine units to take photos, collect oral history interviews, documents and artifacts. They investigate, record, and document Marine Corps operational and institutional experience home and abroad. - Col. Wheeler interviews a gunnery sergeant at Camp Ramadi in Iraq where he was deployed as a field historian in 2006. Field historians are deployed with Marine units to take photos, collect oral history interviews, documents and artifacts. They investigate, record, and document Marine Corps operational and institutional experience home and abroad.