Historical clue formulations

• Auto parts giant — 2021-08-21
• Stewart's onetime TV sparring partner — 2018-09-07
• Radar of "M*A*S*H" — 2018-02-07
• Author of the 2006 best seller "Culture Warrior" — 2007-10-20
• Big name in Fox News — 2005-11-13
• "M*A*S*H" corporal — 1998-02-27