What was the bloodiest battle of W.W.II fought by Marines?

The bloodiest battle of World War II fought by Marines was indeed Iwo Jima, not Tarawa. Iwo Jima, which took place from February to March 1945, resulted in a staggering number of casualties, with almost 26,000 U.S. casualties, including nearly 7,000 Marines killed. The battle was significant due to its strategic importance as it provided a base for U.S. bombers to support the ongoing campaign in Japan.

While Tarawa was a fierce and critical battle in the Pacific, it did not reach the same level of casualties as Iwo Jima. The fight at Tarawa resulted in approximately 1,000 U.S. troops lost and was notable for the lessons learned about amphibious operations and the ferocity of Japanese resistance. However, in the context of overall casualty figures and long-term impact on the war, Iwo Jima stands out as the most intense Marine engagement in terms of loss of life, making it a historically significant battle in the narrative of Marine Corps history during World War II.