I always liked destroying things with the 165mm main gun on the M728 CEV (combat engineer vehicle). The 165mm HEP rounds will mess up a lot of stuff. The M728 CEV was nothing but a M60 with a short 165mm main gun, bull dozer blade, and an A frame for heavy lifting. The combat engineer battalion I was assigned to from Jan 92 till Dec 94 still had recoilless rifles in our arms rooms. We rarely got to shoot them though.