I don't think they worried overly much about morale
A couple of years ago, some ancient letters were found from a Roman soldier stationed in what is now the UK. The letter could have been written by any modern day soldier on a far away mission.
He wanted news of the family and for them to send him some clothing and food, like cookies and snacks, and complaints about army life in general.
2000 years and nothing has really changed in a soldiers life...................