Place it at the climax of an invasion scene, after a short build with Dun Dun Dun and before the chaos of Pew Pew, so the cannon marks the turning point and the smaller effects fill the battle that follows.
About this sound
This is a short, heavy tank cannon blast with a sci-fi invasion edge, lasting about 1.8 seconds. A deep boom and metallic impact give it a sudden, powerful punch that feels dramatic and over the top. It works as a quick shock effect, turning an ordinary moment into something that sounds like a full-scale attack is starting.