As expected, Chapter 1 still has a lot of tutorial stuff going on. However, it does introduce Valkyria Chronicles 4‘s new unit type, the Grenadier.
I don’t know why they didn’t call this unit a Mortar carrier, or something similar, because “Grenadier” has traditionally been a term associated with team members or whole units focused on throwing grenades/carrying a grenade launcher/being heavy assaulters. None of these things are true of the VC4 Grenadiers. I refer to them as mortar units in-game most of the time. Scouts, Machine-gunners, and mechanics all carry grenades.
Regardless of the terminology issues, the Grenadier/Mortar unit is a really fun addition to the game. They unlock some great indirect fire strategies, and can help slow down enemy units with reactive fire during the enemy’s turn.