Complex sentence: A Dalforce unit was also attached to the 1st Malaya Infantry Brigade which took part in the Battle of Pasir Panjang, and was most notable in the Battle of Bukit Timah.
Split into simpler sentences: A Dalforce unit was also attached to the 1st Malaya Infantry Brigade which took part in the Battle of Pasir Panjang. Dalforce was most notable in the Battle of Bukit Timah.