Simplify the following text for a Grade 9 native English-speaking person.
Original: The high point of kamikaze attacks came from April 6 to May 25 , 1945 during the Battle of Okinawa , in Operation Kikusui ( `` floating chrysanthemums '' ) .
Simplified: The peak in kamikaze attacks came during the period of Aprilâ `` June 1945 , at the Battle of Okinawa . On April 6 , 1945 , waves of planes made hundreds of attacks in Operation Kikusui ( `` floating chrysanthemums '' ) .