Hearts of Iron III's US Infantry Sprite Pack is cosmetic DLC that adds more varied infantry and artillery models to the game. When it comes to unit models you are going to see the same model with a different uniform and usually the same gun, which isn't as noticeable on the world map but you aren't going to be seeing huge changes like a pack that adds different ships or tanks. Still, the pack includes a lot of different models that change depending on the year that your game is at and it is a good buy if you want to see more diverse units. The price is reasonable and, if you are not a person that prefers to play with counters instead of using unit models, it is a good purchase for people that like to play as the US.