Lt. Roberts mentions having a sister named Winifred in this episode but later on in the series a brother is introduced and it is implied that there are no other siblings and the sister is never mentioned again.
Bud is studying for a military law school test and is stumped on a question in his practice test, Maj. MacKenize tells him the answer he is looking for is in RCM 9-10 F4. She is referring to the Rules for Court Martial, which is a document, a part of the Uniform Code of Military Justice, that outlines the rules and regulations pertaining to a general court martial. The particular section she is referring to deals with the sentencing guidelines for specific crimes following either a conviction, or a guilty plea, in a court martial.