Work your way up the beach until you get to the shingle. If you have 45 or less health do not continue. Go the medic on the shingle and stay near him. As he says "here you go", crawl away. After getting the bangalores, giving them to your buddies, and running across the field, the medic should come across and get shot. However, your health will go up to full for the damaging run ahead. Note: This was done under the easy difficulty setting.