I enlisted in 1976 in the Marine Corps, went to boot camp at San Diego, went to admin school at Camp Pendleton. did a tour in Okinawa, and reported to MCDEC Quantico, Virginia in 1978. While there I was assigned to mess hall duty. One day, I received verbal instructions from either a gunnery sergeant or a master sergeant who was in charge of our kitchen detail. My response was a prompt “Yes,sir!”. The senior enlisted dutifully reminded me to not call him “sir”, that he worked for a living. I responded with a thought from my upbringing in Texas: “With all due respect, I was always taught to respect my elders.” There was nothing more said from the E-7/E-8.