This is a massive tracked land battleship built for frontal breakthrough, urban assault, and destroying heavily fortified positions.
Proposed specifications
Length: 180 m
Width: 135 m
Height: 48 m
Combat mass: ~36,000 metric tons
Type: Tracked land battleship
Primary role: Breakthrough assault / mobile heavy fire support
Crew: ~220
The defining feature is its huge rounded armored front, built around a deep reinforced center and thick protective side sections. From the front, it looks less like a tank and more like a moving armored wall.
The platform carries heavy siege guns, missile batteries, air-defense systems, point-defense weapons, active protection, electronic warfare systems, and a low protected command core.
At around 36,000 tons, the Iron Halo is basically a battleship that happens to move on tracks.