When, at a ceremony or event, an emcee asks that all active military, veterans, and spouses stand together to be recognized, there is not distinction between the groups.
They all stand. If the woman is a service member or veteran, they know that when everyone stands together the assumption will be they are a military spouse. And what about military spouses? How does this make them feel? They don't quite fit into the category of service member since they are a spouse. Although they appreciate being recognized for their sacrifice, it just doesn't feel quite right.