Which WWII campaign marked the first major Allied offensive in the Pacific aiming to secure Guadalcanal and adjacent areas?

• A. Iwo Jima Campaign
• B. Midway Campaign
• C. Guadalcanal Campaign
• D. Philippines Campaign (1944)

Answer: (C)

The test centers on the Pacific War turning point when the Allies began a true push back against Japan. The Guadalcanal campaign is the first major Allied offensive in the Pacific, undertaken specifically to seize Guadalcanal and nearby islands and deny Japan a base that could threaten supply routes to Australia and control air power in the region. The operation, initiated in August 1942 as an amphibious landing (code-named Operation Watchtower), brought U.S. Marines and Army personnel ashore to establish Henderson Field and push Japanese forces off the island. After months of hard fighting through land, sea, and air battles, the Allies held the island and began expanding their foothold, marking a decisive shift from defensive posture to sustained offensive operations in the Pacific.

Iwo Jima and the Philippines campaigns came later in the war, with Iwo Jima occurring in 1945 as a separate objective to secure a critical air base, and the Philippines campaign in 1944–45 focused on liberating the Philippines rather than securing Guadalcanal. The Midway action in 1942 was a major naval battle that checked Japanese expansion but did not aim to secure Guadalcanal.