Complex sentence: The 1st Airborne Division was withdrawn to England soon after leaving the battalion still with the 2nd Parachute Brigade in Italy as an independent formation, comming under command of the 2nd New Zealand Division.
Split into simpler sentences: The 1st Airborne Division was withdrawn to England soon after leaving the 2nd Brigade in Italy as an independent parachute brigade formation. The brigade come under command of the 2nd New Zealand Division.