Aldirin

Long story short is the Pershings had access to T30E15/16 HVAP (APCR) rounds, T33 APBC which was a heat retreated M77 AP round with ballistic cap that was specifically meant to be able to penetrate sloped armor better than the other 90mm rounds while mostly solving the issue the M77 had with shattering (mostly...), then the usual M82 APCBC and M71 HE rounds. The Jackson could fire all of the above too but the T26s were certainly issued their fair share of the special rounds since the famous Panther duel at Cologne involved 2 T33 and a T30E16 HVAP round, while the other fights with Panzer IVs and the Tiger in Elsdorf were done with the T33 mostly, with a HVAP that hit the Tiger right basically on its final drive. I know Zaloga says the T33 was the standard AP round for the Pershing but I'd be curious about seeing that in a primary source additionally, guessing it's probably in one of the Zebra Mission reports.

If it makes you feel better, when I played that, the Pershings didn't have a lot of trouble with Tiger Is unless they were angled just right.

The M26s are weird classification wise anyway. They get reclassified to heavy tanks relatively late in development since the T25/T26 pilots and even the T26E1 are still labeled as medium tanks before the latter gets reclassified. They also are kind of hard to integrate in with the way CM does tank companies and the like. Like 3rd Armored Division just put their Zebra mission Pershings in with the medium tank companies (which is why Eagle 7 was in a platoon with Shermans), but 9th Armored Division T26E3s were used in both a heavy tank platoon in the 14th Tank Battalion and individually with the 19th Tank Battalion. I would like to ask if the M26s have T33 APBC in the game like they did in real life since I noticed I tended to bounce shells off the Panther glacis when getting into slugging matches on the front. Not really a problem at all since it encourages flanking, I just remembered them having T33 in CMBO but that could just be my memory playing tricks on me.

To add to what Frenchy56 said basically the Guards Armoured Division's 5th Guard Armoured Brigade was all mixed Sherman Vs and assorted Sherman *C models in the battalions, 11th Armoured Division's 29th Armoured Brigade was switched to Comets after the Bulge (having intended to start and finish this process in December-early January), the Canadian Armoured Brigades in both the divisions and brigades were generally either Sherman IIIs or Vs, with regiments having either within a brigade. Then of course the DDs used in the Rhine crossing in the British area were mostly Vs, with some IIIs. The Polish regiments are some unholy mixtures of Vs, IIAs, and Fireflies. I should also say this is just gun tanks, but Vs are the most common tank for specialized conversions too.