Tank Gang bang style?
 

Can 2 tanks on the same team gang up on an 1 of the oppising team?

do you got to switch between freq to move the tanks or do they both move at the same time?

Yes, two tanks can 'gang up' on a third.
Two friends of mine with their Shermans try to kill my Tiger but rarely do.
On a coffee table with some minor obstacles the Tiger always manages to hit both Shermans twice before taking enough hits to be disabled.
To do this the Shermans are set to ID1 and ID3 while the Tiger is ID4. The Shermans cant hit each other this way when running on the team setting (lower position, switch 1)

thx for the info shilka kinda sux that you really got to send 4 shermans just to kill a tiger do you got to switch between freq to move each tank? or when you press forward they both move?so if you fire they both fire