"Fire-breathing monstrosities that reduce even the strongest bases to cinders." - Kabam
You can only train Decimator's with a level 5 tech lab.
Decimator's [sic] have been released! (2012 Oct 15)
Edgeworld Mail:
Commander, the time has come to bring Ruin to your enemies. Rolling out of Factories across Cerulea IV is the new Decimator! This fire-breathing monstrosity is a fusion of Cerulean Artifacts and Union Technology. This troop rips through barriers, melts metal, and can reduce even the strongest base to cinders! Rip your targets to pieces, with the Decimator! Train yours today!