Answer: mustering

AnswerCrossword Clue
musteringSummon up (a particular feeling, attitude, or response)
mustering(of a group of people) Gather together
musteringCollect or assemble (a number or amount)
musteringAssemble (troops), esp. for inspection or in preparation for battle
mustering(of troops) Come together in this way
musteringMUSTER, to gather together