[Mobhack]

Be in the same or adjacent hex to the target vehicle
Be better than pinned status with your assaulting infantry (rally up if not)
Have sufficient remaining movement points (2 or 3?) to assault (new requirement come last version or the one before)

Then "fire" on the target vehicle, and if the infantry pass a morale test, then the assault happens. (Open fire by putting the cursor on the target and clicking as usual, or using the T key to select it and pressing F subsequently, whichever you prefer)

- movement to the target is not good for the assaulter
- suppression is not good for the assaulter
- lack of men is not good, as is damage. - Being an inf-AT class element is slightly better for an assaulter, being crew or snipers or observers or other small units, not so good. (The inf-AT class is not penalised so much for small number of people). Being a depleted (50%+ damage) infantry element is probably the worse case situation.
- lack of either morale or experience is not good to the attacker
- lack of a useful assault weapon is not good for the assaulter (hand grenades at a pinch, but a proper anti-tank weapon or flame weapon is best - ie a weapon with at least some AP pen). Units lacking a proper A/T weapon are more prone to retreating in "Tank Panic" on failing an assault
- being unspotted is best for an assaulting unit, if known about, less good
- If target is buttoned up or worse, very good for the assaulter. If the target is not closed down, try pinning him with fire from a covering unit of yours before going in with the assault. However, any misses may drift onto the prospective assaulter which is not good..
- If target is open-topped, very good for the assaulter. Open top AFV are grenade buckets.
- If the target AFV is immobilised (track or engine hit) - better for the assaulter
- If the target AFV is damaged, it is better for the attacker
- the thicker the side armour of the tank, the better for the defender, especially against non HEAT weaponry (hand grenades, HE charges etc). Negated if the AFV is open topped though, those types of AFV are toast to assaults.
- If the target has riders or passengers, they may defuse the assault especially if the vehicle is left unsuppressed before assaulting. The defenders may suffer casualties, or drop off and shoot you in the face on occasion.