In this regard both the Dickson advisory group and the Somalia commission recommended the establishment of a military prosecutor, independent of the chain of command, to deal with serious disciplinary and criminal charges and to be responsible for the conduct of all cases before courts martial.
The advisory group recommended the establishment of a brand new prosecutor
The passage states that the prosecutor was from the military, not brand new 
( z1 recommend :ARG0 ( z2 group :ARG0-of ( z3 advise ) ) :ARG1 ( z4 establish :ARG1 ( z5 person :ARG0-of ( z6 prosecute ) :ARG1-of ( z7 new :degree ( z8 brand ) ) ) ) )