Complex sentence: Eagle Scout ("Pramuka Garuda") is the highest rank in each age group for Scouts in Gerakan Pramuka for those Scouts who can fulfill the Pramuka Garuda qualification.
Split into simpler sentences: Eagle Scout ("Pramuka Garuda") is the highest rank in each of age group for scout in Gerakan Pramuka. Highest acquirement award for those Scouts who can fulfill the Pramuka Garuda qualification.