How did the allied campaign in italy prepare for the ground invasion of france on d-day?

D-Day Invasion started on June 6, 1944. The Allies prospered in redeeming France, Belgium, and Luxembourg. The troops battled their way onto a 60-mile stretch of beach in Normandy. The Germans had quarried in with machine guns, rocket launchers, and cannons and lived behind tangible walls which are three feet thick.

he came up or eelped come up with the jersy plan