chief cook and bottle washer

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun humorous, informal Someone whose responsibilities include absolutely everything, from the highest level (chief cook) to the lowest (bottle washer)
• noun US The familiar form of address for any US Army warrant officer or US Navy and Coast Guard Chief Petty Officer. Also, a section leader in the US Army, and a familiar term for Chief Master Sergeant, the highest enlisted rank in the US Air Force.