Assisting veterans for getting into a civilian life is necessary because they are an integral part of our society. They are the ones who sacrificed a lot for the country and now is the time to pay them back.
They get back to their homes from an intense war in order to face their more difficult battles. Those who are badly injured require learning about living without mobility or limb and it is very painful.
You also find some veterans having serious brain injuries or an intense level stress and