for the operation. On 27 April 1946, seven officers and 51 enlisted embarked at CBC Port Hueneme, for transit to Bikini. Their assignment was to retrieve water samples from ground zero of the Baker blast. Korean War The Korean War began on 25 June 1950, when the North Korean army invaded South Korea. Beginning with a detachment of 11 personnel from UDT 3, UDT participation expanded to three teams with a combined strength of 300 men. During the "Forgotten War" the UDTs fought intensely, employing demolition expertise gained from World War II and using it for an offensive role. Continuing to use water as cover and concealment as well as an insertion method, the Korean Era UDTs targeted bridges, tunnels, fishing nets, and other maritime and coastal targets. They also developed a close working relationship with the Republic of Korea Underwater Demolitions Unit (predecessor to the Navy Special Warfare Flotilla), which continues today. Through their focused efforts on demolitions and mine disposal, the UDTs refined and developed their commando tactics during the Korean War. The UDTs also accompanied South Korean commandos on raids in the North to demolish train tunnels. This was frowned upon by higher-ranking officials because they believed it was a non-traditional use of Naval forces. Due to the nature of the war, the UDTs maintained a low operational profile. Some of the missions included transporting spies into North Korea and the destruction of North Korean fishing nets used to supply the North Korean Army. As part of the Special Operations Group, or SOG, UDTs successfully conducted demolition raids on railroad tunnels and bridges along the Korean coast. The UDTs specialized in a somewhat new mission: Night coastal demolition raids against railroad tunnels and bridges. The UDT men were given the task because, in the words of UDT LT Ted Fielding, "We were ready to do what nobody else could do, and what nobody else wanted to do." (Ted Fielding was awarded the Silver Star during Korea, and was later promoted to the rank of Captain). On 15 September 1950, UDTs supported Operation Chromite, the amphibious landing at Incheon. UDT 1 and 3 provided personnel who went in ahead of the landing craft, scouting mud flats, marking low points in the channel, clearing fouled propellers, and searching for mines. Four UDT personnel acted as wave-guides for the Marine landing. In October 1950, UDTs supported mine-clearing operations in Wonsan