Within 30m, inf has AT weapons[grenades/mines] as "close assault". ...If you can get an assaulting squad within 30 meters of a tank. (For tank busting in early/mid war, better to be defending as inf than assaulting IME. And use smoke as they did.)
EDIT
LINK: "Men Against Tanks"--
http://www.youtube.com/watch?v=j8thWxRiALM
If this was later war, the squad wouldn't need to be within 30m to kill tanks because of end-game Pzfausts. (For late war squads even with pzFaust, "close assault" grenade/mines/pack abstraction becomes possible again w/ in 30m.)
ATR teams exist in PzC as separate units but they are simply not in this scenario. Tank hunter teams come later as dedicated AT teams and are armed w/ PzShrek and Pzfaust.
(Other inf units in PzC...
Snipers: they exist in PzC --and have qualities specific to that type (range and accuracy)-- but just aren't in this scenario. Same with platoon mortar --ie light Mo used as part of certain Inf Regulars' OOB. Mid and heavy mortar (company and btn OOB) is off map: these engagement time lengths and map sizes haven't been big enough to factor in 3D support weapons moving about in any relevant way. Also in PzC there are SubMG squads; Used in war as close combat urban specialists. None of those are in this scenario. At least on German side...)
Just like squad MG aren't under player control, no individual squad weapons(grenades etc) are under player control. Everything is "firepower" factored into the squad's kill potential when a target is in range and accurately acquired.
The one exception to this is Pioniers. They have packs which a player does choose as individual weapon type and aim at target. Also, pioniers as part of their 30m AT close assault, have more effective charges than just grenades and mines ABSTRACTLY factored into pioneer close assault "firepower". The skinny is pioniers are more effective at close range vs tanks than regular inf. (This is just like Gebirgjgs are slightly more effective than reg infantry at long range with their world class marksmen _in the squads_; those Gebirg snipers are player weapon choice as menu pulldown just like pionier HEAT packs are.)
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Note the "gun folder" has many [most] weapons used in war, including even fallshmjager kite grenades and etc. They are not used [yet or ever] by unit XMLs, for this game really isn't that kind of close combat micro management game. A squad is a squad as far you the company commander or kamp gruppe commander are concerned. You don't tell the squadies exactly how to bound into a hut; you tell their platoon head to 'hold that flank (by those huts)'.
As said, once a tank is within 30m a squad's firepower can become antitank.
(I find squad AT close assault effective-- if the squad itself doesn't get wasted in the offing (use smoke).)