Produced by Adolph Zukor and Jesse Lasky, Private Peat is a lost 1918 American silent biographical war drama in which real-life army Private Harold R. Peat recalls his WW1 experiences as one of the first Americans to enlist in the conflict when American joined the war. Peat was from Canada, but is presented as an all-American boy for patriotism and propaganda. The film  primarily consisted of newsreel footage.

Based on the book, "Private Peat," by Harold R. Peat, Harold R. Peat (himself) tries to enlist in the United States army so that he may fight in World War I, but is rejected by the recruiting officer. He is despondent until he and his friend, Old Bill (William Sorelle), concoct a scheme whereby they are both accepted. After a stint in training camp, Harry bids his sweetheart, Mary (Marian Fouche), goodbye and accompanies Bill to France. Following several adventures at the front, Bill is killed and Harold, in trying to save a load of ammunition, is wounded. Harold spends some time in a French hospital, after which Mary comes to France to bring her heroic private home. The cast includes Edwin J. Grant.