An army is a hierarchical organization consisting of brave and skilled professionals dedicated to protecting their country. 'Army member' is a term commonly used to describe individuals who are serving in the military. However, there are several other synonyms that can be used to describe army members. 'Soldier' is a term commonly used for an army member who serves on the ground. 'Sailor' is used to describe an army member who serves in naval operations. 'Airman' refers to an army member who is part of an air force. 'Marine' is used to describe an army member who specializes in amphibious warfare. These terms not only specify the branch of service but also reflect the different roles that army members play in their respective areas of service.