If you're blitz : stormtroopers. They'll greatly outlast any enemy light vehicles, trust me
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If you're Defensive : dual shreks and moving paks generally outlast light vehicles reliably.
Terror : faust will get fixed, then we can enjoy those 4-man KCH taking on greyhounds and T17s alike ^^
US - ATGs generally outlast pumas. If not, just use the mainline anti-vehicle counter : the AP rounds MG.