How to add a new sound to a unit without replacing it's original sound. For example, i want to add a new sound to tomahawk missile launcher, but i don't want to replace it's default sound. I just want to add a new sound, let just say nuclear missile pre launch alarm. So there are 2 sounds playing when tomahawk is about launching it's missile.

Define your new sound on soundeffects.ini
Then apply it to the weapon sound of your any weapon you like done...

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