Soundwave remembers the Transformers greatest battle on Junkion?

TheBattle of Junkion took place during theGreat War, a "forgotten skirmish" betweenProwl'sAutobots andShockwave'sDecepticons in the wastelands ofJunkion... a skirmish, that, ultimately, the planet did not survive.

Fiction

2005 IDW continuity

At some point afterMegatron returned from his exile on the planet Junkion, having recruited thenatives into his army, the planet found itself embroiled in the Transformer war once more when the two warring factions turned the planet into a battleground—a battle that pitted the two logical commanders against each other and the chaotic death world.

The battle came to an abrupt conclusion when one side wired the planet's gravimetric core to detonate, shattering the planet as both sides retreated. At least one tribe of Junkion survivors came under the guidance ofWreck-Gar and his consortRum-Maj, who subsequently took up a nomadic existence.A Lonely Pillar on the Plain

Notes

• Other participants in the battle includedHardhead,Delta Seeker,Hot Spot,Manta Ray,Greatshot, andSilverbolt; on the Decepticon side of things, Shockwave's army countedX-Gunner,Octopunch,Fangry, andWeirdwolf among its ranks.