Based on the clue 'a group of soldiers or what they do to get from on...', what is the answer?

Based on the clue 'a group of people appointed for a specific functio...', what is the answer? Based on the clue 'a group of people with common interests or a greek...', what is the answer? Based on the clue 'a group of reindeer cows gathered together by a re...', what is the answer? Based on the clue 'a group of sculptures from the parthenon is known ...', what is the answer? Based on the clue 'a group of spies or traitors within your own defen...', what is the answer? Based on the clue 'a group of students at the same grade level', what is the answer? Based on the clue 'a group of synthetic drugs are anti this chemical ...', what is the answer? Based on the clue 'a group of these birds is a mustering we guess the...', what is the answer?