Cybran ACU wrecks stuff.

Supreme Commander 2.
The Cybran Campaign mission 02 is quite strange. The protagonist encounters an automated research base that went nuts - the factories started producing an enormous number of engineers (construction/reclamation/capture unit) that spread out through the island building defensive turrets. If they encounter a unit or building that isn't theirs, they would attempt to capture it.
The mission is to capture the server of the station to allow Dr. Gustaf Brackman (leader of the Cybran Nation, a cybernetics scientist and a biological father of the protagonist) to debug the code and find out what happened.
The ACU is immune to being captured. So instead of mounting a naval attack, I just went forward, slapped Nanobots (adds an Area of effect damage over time effect to ACU's main gun) and Loa Tactical Missile Launcher for outranging the point-defense turrets.