Complex sentence: The 1st Airborne Division was withdrawn to England soon after, leaving the 2nd Brigade in Italy as an independent parachute brigade formation that came under command of the 2nd New Zealand Division.
Split into simpler sentences: The 1st Airborne Division was withdrawn to England soon after leaving the 2nd Brigade in Italy as an independent parachute brigade formation.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