NPCs composing that spawngroup :

orc_centurion (50%)

orc_legionnaire (50%)

NPCs spawning around that spawngroup :
(Max range : 100)

crushbone_2, range=82 (116,-257,-17)

an_elven_slave (50%)
an_elven_slave (50%)

crushbone_15, range=24 (74,-178,4)

crushbone_22, range=48 (83,-131,6)

orc_centurion (100%)

crushbone_36, range=77 (89,-100,7)