By George Friedman
About 75 years ago, U.S. Marines landed on the islands of Guadalcanal, Tulagi and Florida in the British Solomon Islands. Their mission was to block the Japanese from building an airfield on the island and, after blocking them, to build their own base to fly from while the Marines drove the remaining Japanese out. The U.S. Navy would land the Marines on the island, block Japanese resupply and reinforcements from landing, and secure the American line of supply from Australia and New Caledonia.
Two months earlier, the Japanese had suffered a strategic defeat at Midway, losing a substantial portion of their fleet in the process. Japan was not without resources, but its primary thinking was now the strategic defensive. It sought to secure its gains by two means: reinforcing the layers of islands it had, and conducting regional offensives in defense of its holdings.
The American fleet wasn’t ready for major operations, nor did the U.S. Air Force yet exist in force, but the U.S. strategy had become obvious. There were two lines of attack available. First, there was a western offensive, running from Australia to New Guinea to the Philippines to Taiwan and Okinawa. Second, there was an offensive from the east: Hawaii-Gilbert Islands-Carolines-Marshalls-Marianas-Bonin-Okinawa. Put in terms of the critical and famous islands, this was an offensive through Tarawa, Saipan and Iwo Jima to Okinawa – and many other brutal but less famous islands.