"actually the explanation I heard pre-prequels as to why the Imperials were able to attack through the rebel shield was that the terrain features prevent shields from covering all the way to the ground, kind of like an umbrella if you will.
But of course that explanation was shot by Lucas' plasma looking shield the Gungan's used in Ep I.
/sry OT biase"
Well if we assume they work in the same way, the Imperials could just land outside the shield and walk in.
"Your life does flash before your eyes before you die..... the process is called LIVING"