Sentence:A large [e1]detachment[/e1] of Soviet [e2]partisans[/e2] was beginning operations in the area and so the UPA company was forced right from the start to make manoeuvres in order to avoid a confrontation with the Soviets.
 e1: detachment. 
 e2 : partisans.
Answer: Member-Collection(e2,e1)