Researching a supplement to my original work on ACW soldiers & sailors from my own town, I've come across a term that I don't know. On his pension record, there is a notation that he held the rank of "Ward Room Steward". This sailor served 2 terms, first as an officer (2nd Lt.) and 2ndly as an "Ordinary Seaman". What does this term mean and is there any guess as to which service?