Numerology. 1  Chaldean Numerology. The numerical value of combined joint special operations task force in Chaldean Numerology is: 7. 2  Pythagorean Numerology. The numerical value of combined joint special operations task force in Pythagorean Numerology is: 5.
Guide to Comma Use. Learning when to and when not to use commas is a difficult and sometimes overwhelming task for many writers, but it is absolutely essential because commas are signals that tell readers which words need to be separated from each other or which words are not essential to the basic grammar of a sentence.
(edit, so this isn't a terrible answer if you edit your question) In the case of greetings such as the ones you wrote in your question, yes, a comma is necessary. In some cases, though, such as the greeting Dear John at the beginning of a letter, there is no comma before the name, but rather after.