Sentence:After the Marian reforms the Legion was notionally a [e1]unit[/e1] of heavy [e2]infantrymen[/e2] armed with just sword and pilum, but even so it was normally fielded with attached auxiliary skirmishers and missile troops, and incorporated a small cavalry unit.
 e1: unit. 
 e2 : infantrymen.
Answer: Member-Collection(e2,e1)