Inspecting this lone infantry that can demolish panzers, i see the following stats:
Soft Attack: 5
Hard Attack: 6
Ground defense: 8
Experience: 23
(Entrenchment level: 4)
Screenshot bellow:

Then it hit me, they are truly a Belgium super-humans infantry division.
Look at the stats of my Elite Grenadiers in the same map(just about my best infantry division):
Soft Attack: 6
Hard Attack: 3
Ground Defense: 7
Experience: 91
(Entrenchment level: 3)
Screenshot bellow:

This random Belgium infantry has double the hard attack, 1 extra point of ground defense, all that for 1 less point of Soft Attack.
Thing that bugs me more, is that their anti-tank power is right there close to a Panzer IVD.
Panzer IVD:
Soft Attack: 8
Hard Attack: 7
Ground Defense: 6
Is this infantry division working as intended, or are their stats inflated for some reason?