Itaque inutili militum turba praesidii specie in oppida Bruttii agri, quae pauca magis metu quam fide continebantur, dimissa, quod roboris in exercitu erat in Africam transvexit.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "exercitu" in a variety of sentences. We hope that you will now be able to make sentences using this word.
