Eulogy or poem for death of an acquantance needed?

I have a co worker who was asked to speak at a funeral for the son of her friend. He was only an acquaintance to her. I need help finding some type of condolence poem. This man was a Vietnam veteran. However, he cast away by society, suffering both the mental and physical scars of war. It seems to not be fitting to have a memorial that relates to his time in the service which inevitably killed him. Most of the poetry on death seems to be from the 'love' connection of a person or they are written in ways that would seem way too formal for this type setting. Any suggestions would be greatly appreciated.