>>96102477
>Line infantry seems really to be the anti-thesis of elves
I don't know. Well drilled infantry in tight formation is pretty common for (high) elves. That's exactly what you want when firearms start appearing since it gives you massive firepower. If anything elves would be leading the firepower race as other races struggled to raise regiments of the same quality and having to keep them safe with more pike longer.

Perhaps other types of elves would not be found in tight firing lines though. Wood elves that have advanced civilizations that thrive in thick forests were linear battle formations are impractical could perhaps instead use well drilled skirmishers instead since they're never going to receive tightly packed shocks anyway.

Dark elves living underground would perhaps develop incredibly defensive tactics and extremely aggressive shock units to make the best use out of the constant chokepoints in their caves.

Like in real life it's environment, geography, society, technology, economy, government etc. that determines what warfare looks like. It flows downriver