It is hereby declared to be the policy of this Commonwealth that there shall be equality of treatment and opportunity for all persons in the Pennsylvania National Guard and the Pennsylvania Guard, without regard to race, creed, color, national origin or sex. Such policy shall be put into effect giving due regard to the powers of the Federal Government which are or may be exercised over the Pennsylvania National Guard and to the time required to effectuate changes without impairing the efficiency or morale of the Pennsylvania National Guard.