But the freedom that they fought for, and the country grand they wrought for, Is their monument to-day, and for aye.

The lines argue that the truest memorial to soldiers is not a statue or grave-marker but the living political achievement their sacrifice secured. “Freedom” and the “country grand” are framed as enduring, collective outcomes—public goods that persist beyond any individual life. By calling these achievements “their monument,” the speaker shifts commemoration from material remembrance to civic responsibility: later generations honor the dead by preserving the liberties and national ideals won at such cost. The closing “to-day, and for aye” stresses continuity, implying that the monument is renewed daily so long as the society remains faithful to those founding sacrifices.