AskHistorians

Thats the thing, they were not ideal conditions.

You could see a few dozen yards tops while choking on gunsmoke as 50 guys all fired at the same time. Muskets were cartoonishly inaccurate, they had ~30% chance of the bullet rattling around in the barrel and landing in the dirt if you were aiming for something 30 yards out (provided you could see it, and quickly ID whos side that formation was on). To compensate for that, volley fire was the most effective means doing reliable damage to the opposing army.

The tactics at the time were just developing past the need for pikes and long pointy sticks. Napoleon and the US civil war did the same things, but that was after rifling was invented and bullets usually when where you pointed the loud end of the gun. They were still 150 years out from WWI and thats when, IMO, formality was fully phased out for practicality.