In any action brought under any law of this Commonwealth for the appointment of a committee or guardian for a veteran of any war, or a minor child, or incapacitated dependent of a veteran of any war, on whose account benefits of compensation or insurance or other gratuity is payable by the United States Veterans' Bureau, or its successor, or upon the filing of any petition or account by any such committee or guardian of any such person, notice of such action, or of the filing of such petition or account, and of the hearing thereon, shall be mailed the attorney of the United States Veterans' Bureau office having jurisdiction over such person. In all such cases, the United States Veterans' Bureau, or its successor, shall be a party in interest, and a certified copy of each account filed in the court shall be supplied the said bureau by the committee or guardian.