Angela
Even if the note was totally clear, on its own it is simply a reference to a document, in this case a telegram, that would have occasioned some other entry on the record somewhere. That is why I suggested you scan the note with more of the record, ideally the whole page. Very often, one has even to look at other pages of a record to find the clues that add up to the answer.
ShaunJ is right that it would not have related to another family member although it may have been an instruction applicable to him and to all others in his formation. Telegrams were used for purposes other than notifying casualties and the word sometimes relates to messages sent in the field by telegraph.
As this is a Great War record and presumably on line, could you post his name and number and I can see if I can find it.
MaxD
PS While it won't help, was he in the Welsh Guards?
