In the second mission of the American campaign (The first night mission), if you look at the names of your comrades you should see a Private Gordon and a Private Freeman. This may be a reference to the characters in Half-Life and Half-Life 2.
This is titled Eerie because in the Bois Jacques (where you fight back the German Tanks with Private Anderson, after the scout patrol with Private Ender and Sergeant Moody), when you're moving to your foxhole with Private Anderson, you pass one man pulling...
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