Supertramp’s review published on Letterboxd:
A cryptic, allegorical war film that everyone needs to see.
"The War with Grandpa" slyly criticizes all of America's major wars in a hilarious and entertaining way. Not since Satyajit Ray's "Two" has a movie been this clever at portraying conflict between two different worlds. Peter's Grandpa is moving in to his room, so he has to stay in the attic. Peter suggests that him and Grandpa share the room, implementing communist ideologies. The Grandpa represents capitalistic ideals being worn-out, and having no real use anymore. While the fresh new ways of the youth are sent to live in poor conditions and squandered by the capitalistic boomers. This is elaborated upon when Grandpa visits his friend who is living a fine life in wealth and the latest technology.
The young girls obsession with Christmas represents the cold war in which Peter and his Grandpa are at a tense armistice. Grandpa even directly refers to the Christmas armistice during World War 1. However the two men keep showing off and eventually erupts in destruction. At the end of the film, Peter states that war is no fun and people just keep attacking and attacking until a bomb goes off, referencing the disastrous Christmas party and likening it to the atomic bombings of Japan.
"The War with Grandpa" is a brilliant anti-war film that is great for kids to see. It's so simple that a baby could understand this, so show this film to your kids. Let them know the true horrors of war.