The Mammoth MK3 based on Tiberium Wars. It has a T1-atom chamber and a standard chamber, two rocket launchers and a 8x8 equipment grid.
It is effectivly the same as the T1-Atomic Tank but I swapped out the flamer and machine gun for the two rocket launchers.
This tech can be unlocked after the Atom Bomb and base Tank are researched.
James Fire and randomflyingtaco creators of Factorio and Conquer have explicit permission to use and modify the Mammoth-MK3 for use with Factorio and Conquer