 Complete the following phrase:  In January 1942, Itsukushima was assigned to the Netherlands East Indies theatre of operations, supporting the Japanese invasions of Tarakan and Balikpapan in Borneo as flagship of the Second Base Unit under Admiral Sueto Hirose. From 10 March, she was reassigned to the 3rd Southern Expeditionary Fleet under Admiral Rokuzō Sugiyama, and continued to support operations in Borneo and 