Hi, Andrew.
I love tanks. I know that many players do not prefer AFV, but I have been a treadhead for a long time.
Since your object is to learn the rules by doing, then I would attempt to OVR the 6-5-8 with the first T-70.
First, move the T-70 up and hope to survive a PF check. The good news is that he only gets one successful check. See D13.3 for the gory details.
If you manage to survive that, calculate your OVR FP and declare an OVR attack as you enter the hex. Don't forget to apply the FFMO –1 because he is in the road. These particulars are in D7.1.
After the OVR attack, he has the opportunity to attack you with Reaction Fire. If he hasn't fired that PF yet, he could try to blast you with it using Non-CC Reaction Fire. Most likely he will attempt to use CC Reaction Fire. Just remember, the OVR is resolved first if he uses Reaction Fire. For the MMC options, check out D7.2, (and don’t forget the last sentence of D7.1).
By the way, the 6-5-8 in the road Location does not qualify for Street Fighting. In this situation, only units attacking from one of the adjacent buildings would qualify for Street Fighting versus an AFV. It's one of the first requirements found in A11.8.
If your tank has survived all that, I would keep it moving on its merry way. Then turn to your next T-70 and contemplate the situation. If that 6-5-8 is still there, then repeat as necessary.
This could get messy, but just take your time. Did I mention to read D7.2? Real slowly...
Just remember that enemy units are no prohibition to your T-70. You could simply drive straight through his hex without attacking and hope for the best. When you enter a hex containing enemy units, the normal terrain and stacking rules apply, i.e. A5.11 for Infantry and D2.14 for vehicles.
If your first T-70 has become wrecked, it would cost one extra MP to enter the hex (D2.14). If it was blazing, it would cost two MP (one each for the wreck and the smoke; B25.141). Yep, blazing wreck stuff is buried in B25.14, so check it out if you need to.
Well, I suppose that has given you a lot to chew on. Run that exercise about five or six times, and you'd get pretty good at OVR and Reaction Fire, I reckon.
Give me a good old fashioned tank shoot-out any day. Then we can talk some tactics...
Regards,
Bruce Bakken