Good point. Adding a version with artillery piece.
"Shield B." Armored Infantry Support Mobile Artillery
Chassis: Unique. Large curved shield in front of the tank, fairly wide. Has rotating socket for artillery piece.
Armour: Shield: 4 layers of electromagnetic reactive armour and laserproof crystal (I should really combine the two). Hull: 1 layer of electromagnetic reactive armour and laserproof crystal.
Weapons: Single particle accelerator cannon piece with hull mounted rapid fire rocket gun for infantry suppression
Movement: 2 composite tracks, heavy duty engine.
Cargo: Can hold weapons and ammo. Needs only a single driver and gunner. Shield capable of protecting supporting 2 supporting infantry columns from a 270 degree angle.
Operation: As a "turtle" and as heavy cover. "Turtling" allows the tank to draw enemy fire, whilst fire support moves in. The tank can also move forward, providing an advancing defensive bastion, at the price of being easier to flank. The B variant also adds a PAC for suppressing enemy positions, by firing over the shield.
Pros and Cons: Near invulnerable from frontal non-nuclear attacks, weak rear end. Expensive. Much better when used in wedge formation to provide more cover. B variant is even more expensive, but has an added mobile PAC.
Titan Armour
Composition: A combination of electromagnetic reactive armour and laser cancelling crystals. The outer layer of the reactive armour is replaced with the diffusing crystal, allowing the armour to easily deflect both kinetic and energy based attacks, with enough layers.
Cost: Very expensive. Should be used only for high-level armour.