If an HC building with units inside is in range of an enemy tank, can the tank fire ordnance and destroy the building and units therein? If so, how is this handled?

Does a leg unit have to begin it's move adjacent to an enemy unit in order to melee, or can it enter the enemy hex from more than one hex away? If the latter is the case, can it be op fired on when more than one hex away or does a declared melee prevent that?

In playing the Starter mod for LnLT, there are a few questions: the printed Starter Kit has two scenarios each for Nam and WW2, but there is only one in the Vassal mod. In addition, only the first page of the scenario is available in the pdf? in the WW2 scenario, as played in the walkthrough...