Gastrocnemius muscle the medial condyle of the femur. Its other end forms a common tendon with the soleus muscle; this tendon is known as the calcaneal tendon or Achilles Tendon and inserts onto the posterior surface of the calcaneus, or heel bone. Further, it is considered a superficial muscle as it is located directly under skin, so its shape is clearly visible in a normal human being. Deep to the gastrocnemius (farther from the skin) is the soleus muscle. Some anatomists consider both to be a single muscle, the triceps surae or "three-headed [muscle] of the calf", since they share a common
Bertram A. Bone Atoll, Wake Island, Johnston Atoll and Palmyra Atoll. Bone was meanwhile promoted to the rank of lieutenant colonel in May 1939. In November 1939, the 1st Defense Battalion was activated in San Diego with Bone as its commanding officer. As experienced artillery officer, Bone supervised the formation and initial training. His battalion consisted of the batteries with 5"/51 caliber guns, searchlight and aircraft sound locator and antiaircraft groups with M2 Browning and M1917 Browning machine guns and were ideal for the defense of the islands from the attack from the sea and air. At the beginning of March 1940, 2nd