what is the maria's advice to bruno after their talk?

Bruno is very upset about moving, and he confides in
Maria.  He feels that Maria is part of the family, even though his father only considers
her a maid.  Maria explains that they have moved bacause of his father's job.  Bruno
complains and says that his father should think twice about his job.  Just at that
moment a young soldier comes out of his father's room, and comes and stares at Bruno. 
Bruno does not like the young man because he was too serious.  Maria explains that they
all have serious jobs. Her advice to Bruno is that

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"But if I was you, I'd steer clear of the
soldiers."  (pg 19)

Bruno
agreed stating that he didn't see what else there was to do.