What was the codename of the battle which almost destroyed Shuri Castle?
Shuri Castle: Shuri Castle (首里城 , Shuri-jō ) is a Ryukyuan "gusuku" in Shuri, Okinawa. Shuri Castle:  In 1945, during the Battle of Okinawa, it was almost completely destroyed. Battle of Okinawa: The Battle of Okinawa (Japanese: 沖縄戦 , Hepburn: Okinawa-sen ) (Okinawan: 沖縄戦 , "Uchinaa ikusa " ), codenamed Operation Iceberg, was a major battle of the Pacific War fought on the island of Okinawa by United States Marine and Army forces against the Imperial Japanese Army and included the largest amphibious assault in the Pacific War during World War II, the April 1, 1945, invasion of Okinawa itself.
Operation Iceberg