Inspired by the mod that does the same thing here.

Removes the voice acting during battles. The general speech is still enabled.

Make a back up of the file. Drop it into your data folder!CYVSmRCK!nA7B8sz8W...8s_HcxF5K7xk-c

Great for unit mods that say the wrong name for their units or if you just want a more immersive game overall.