Origin: pioneer
1515–25; < MF pionier, OF peonier foot soldier. See peon , -eer Origin: peon
1820–30; < Sp peón peasant, day laborer < VL *pedon- (s. of *pedo ) walker (whence ML pedones infantry, OF peon pawn 2 ), deriv. of L ped- (s. of pes ) foot
From the origin of the word pioneer it is obvious to see why the society has named them "pioneers".
Pioneer refers to a peon or pawn who walks around working full-time for free.