The Groundhog is a stealthy minelayer/minesweeper vehicle that can lay mines on the battlefield and detect nearby enemy mines.

Always place mines outside of your opponents line of sight so they're not detected.

It has a mini-radar jammer to hide from enemy radar, and using mines is a cheap way to secure your flanks or expansions without defensive structures. The easiest way to place a minefield is using the  Queue Command or Grid Building commands.