I mean, troops in column exchanging musket fire?
They did this right up to the American Civil War, then discovered that Napoleon era tactics with rifled muskets meant mass carnage.

Certainly for the time period the game covers massed infantry is entirely appropriate.

The british were really the only power that favored the long thin lines of troops - other nations would go for more heavily massed formations. See the endless debates over the british line vs french column formations during the napoleonic wars.