The farther the riflemen followed behind the LMG, the more easily the rear machine guns could shoot past them.The constant movement and sheer mass of this formation could break through most enemy lines, but was susceptible to being broken by well-drilled or large volumes of fire as it could not fire as it advanced. Mahan on Naval Strategy
Although the division base was significantly changed in the process of airmobilization, this was not a major reorganization for the ten airborne infantry battalions assigned to the division. Das Rätsel Salomons / Sarah Weston Bd.2
According to General Van Tien Dung, the NVA chief of staff, his troops avoided defensive positions on the outer perimeter of the city and struck the command and control centers of the South Vietnamese inside the city.In English, use of the term infantry began about the 1570s, describing soldiers who march and fight on foot.