Welcome to Deuteronomy! For the first few chapters, Moses makes speeches to the tribes (a total of 3, apparently). He’s reminiscing and giving them advice and pep talks before they cross the Jordan River to the Promised Land, because he won’t be allowed to go with them. Remember, all the other adults who originally escaped Egypt have died off (Moses gets to live extra-long because he’s special), and so Moses relates the tribe’s history to a new generation to ensure they remember and appreciate it.
His first speech reviews the journey and the battles. For someone who is revered by both Christians and Jews as a hero and role model, Moses sure seems inordinately proud of the death and destruction the Israelites have left in the wake of their trek. The names of the places they stopped and the tribes they encountered sound like syllable soup after a while, but make the first couple of chapters a boring and quick read.