He is confident, talks too much and involved in squabbles.
Explanation:
Wilson is referred to as the "loud soldier" for several reasons such as confidence, participate in squabbles and talk too much. Wilson has more confident in himself and have no doubt on himself. He also involved in squabbles among the other soldiers. The word squabbles means a noisy quarrel on a little important matter. He also talks too much in the army camp so all these qualities make him a "loud soldier".
