To get this achievement go into Split-Screen Versus. Make the second player be the Russians. Make sure you are on the level Isolation. Once it starts build turrets on both sides for safety. DO NOT build Artillery. Make the Russians capture the netural spot. Build a Machine-Gun there and level it up to level 3. Make the US build a Makeshift in the middle build spot. The Russian should then take control of the level 3 Machine-Gun and constantly shoot the Makeshift until it has very low health. Repair it for a Rescued! bonus. You should get the achievement once you get the 5th Rescued! bonus.