Joshua Bertram’s review published on Letterboxd:
World War I rendered as you’ve never seen it before, They Shall Not Grow Old transports the viewer back into the trenches through restored and colourized footage mixed with voiceover interviews from soldiers who were there. The mixture of emotions shared by the men bring to life the experiences of war—the horror, the despair, the camaraderie, the boredom—in a way that enhances the already remarkable imagery. Narrative voices blend together with images that retains a ghostike impression to create an effect where the viewer becomes lost in the environment. Director Peter Jackson has brought us into the past to remind us of what it still has to teach us.