The Post Service Officer shall assist members of the Post, their widows and orphans and other worthy cases brought to their attention in obtaining rightful benefits from the federal and state governments, in the preparation of the proper forms for applying for such benefits and in assembling evidence required in connection therewith. The work of a Service Officer shall be performed in accordance with the instructions contained in the VFW Guide for Post Service Officers under the general supervision of the Department Service Officer. He shall perform such other duties as may be usually incident to the office or as may from time to time be required of him by the laws and usages of this organization or lawful orders from proper authority.