The frontal attack is usually the least desirable form of maneuver because it exposes the majority of the offensive force to the concentrated fires of the defenders. The battalion may conduct a frontal attack against a stationary or moving enemy force (Figure 4-6).
All of the twelve ribs articulate posteriorly with the vertebrae of the spine. Each rib forms two joints: Costotransverse joint â Between the tubercle of the rib, and the transverse costal facet of the corresponding vertebrae.
The sacrum has four important sites where it articulates with surrounding bones. 1  The base of the sacrum is formed by the superior surface of the S1 vertebra which articulates with L5. 2  The apex of the sacrum has an oval facet which allows the sacrum to articulate with the coccyx (tailbone).