The Invasion of Iwo Jima was a significant battle during World War II. It was a major offensive launched by the United States military against the Japanese Empire on the island of Iwo Jima. There are several synonyms that can be used in place of the word "invasion" to describe this event. Some of these synonyms include attack, assault, invasion, incursion, raid, or strike. Each of these words conveys a sense of forceful action and aggression, which accurately captures the intensity of the battle for Iwo Jima. Despite the ferocity of the fighting, the American victory at Iwo Jima proved to be a turning point in the war.