||Priority One is to establish a base and get your spy into one of the Soviet tech centers in the base across the gulf. Data on the Iron Curtain is in there and we need it. Once you get the data complete your mission... wipe out everything.
- Mission briefing
Iron Curtain Infiltration is the sixth mission in the Allied campaign of Red Alert 1.
With Tanya's rescue she was able to inform Gunther von Esling and Nikos Stavros about the Soviets' new defense mechanism called the Iron Curtain located near the Aegean Sea. Professor Albert Einstein revealed that the Iron Curtain would make any Soviet vehicle or structure invulnerable to enemy attack. Being supposedly the only known prototype in existence, Field Commander A9 was tasked to get whatever data there is on the Iron Curtain and then wipe out everything in the area to bury the research. Stavros also warned the commander of a large submarine fleet nearby so it was necessary to first gain control of the gulf that separated the Allied forces from the Soviets