What is satire? Do you detect any satire in chapter 7?

Satire is the use of humor, irony, exaggeration, or ridicule to expose. The giant celebration for Dunstan's return is rather funny. Dunstan does not like celebrations, especially for him. He doesn't want to be a war hero or even spend time in Deptford. Everything is "over the top" and rather odd. People dressed as caricatures:

But here was our village shoe-repair man, Moses Langirand, in what was meant to be a French uniform, personating Marshal Foch;