What was the last offensive battle of World War II?

The last offensive battle of World War II was the Battle of Okinawa. It took place from April to June 1945 and was significant for several reasons. This battle was part of the larger strategy of "island hopping" that aimed to capture key islands in the Pacific to establish a stronghold closer to Japan for the eventual invasion of the Japanese mainland.

Okinawa was one of the bloodiest battles of the Pacific War, involving extensive ground combat, naval engagements, and air support. The Allies faced fierce resistance from Japanese forces, leading to high casualties on both sides. The strategic importance of Okinawa lay in its location, which provided a base for launching further operations against Japan.

This battle also had broader implications for the conclusion of the war, as the heavy costs inflicted on the Japanese defense and civilian populations contributed to the consideration of using atomic bombs to force Japan's surrender, ultimately leading to the end of World War II in September 1945.