The Department of Military and Veterans’ Affairs may approve expenditures by veterans’ organizations and may reimburse them for their expenditures in employing full time service officers, for necessary travel expenses, including travel by service officers outside of the state not more than once each year for purposes of training in veterans’ rehabilitation and service work, and for per diem not exceeding that allowed state employees. The department shall limit payments to veterans’ organizations to an amount that will fairly compensate them for salaries and expenses paid to their full time service officers in performing rehabilitation work for veterans, including the prosecution of their claims and solution of their problems arising out of military service. This service and assistance shall be given to all veterans and their dependents and to all beneficiaries of any military claim and shall include but not be limited to those services now given by the service departments of the respective organizations.