Simplify the following text for a Grade 9 native English-speaking person.
Original: In Japanese , the formal term used for units carrying out suicide attacks during 1944 â `` 45 is tokubetsu kÅ geki tai ( ç å æ '' '' æ ' é ) , which literally means `` special attack unit '' .
Simplified: Their correct name was tokubetsu kÅ geki tai ( ç å æ '' '' æ ' é ) , which literally means `` special attack unit . ''