From the Japanese attack on Pearl Harbor to the dropping of the world’s first atomic bombs the Pacific War transformed America, societies, warfare, technology and global power. Our classroom-ready lessons allow your students to examine the total war, its causes, societal impact and great take-home lessons through primary sources and inquiry-based analysis.

The Student Starter Guide offers four short articles that collectively cover the most common Pacific War study topics:

Common Pacific War Study Topics

The Teacher Lesson Plans are based on multi-state history curriculum guidelines, including the History Content Standards for California Public Schools. The Plans comprise a list of study questions, assignable website articles and synopsis answers for each study question.

Japan had amassed a superior military for conquest. It sought Pacific Rim expansion to possess the natural resources, particularly Dutch East Indies oil, to fuel its economy and military. The U.S. Pacific Fleet at Pearl Harbor represented the primary obstacle. Japan viewed the U.S. as momentarily weak, both militarily and politically. The U.S. had become pacifist and isolationist following WWI and had not maintained a deterrent strength military.

Hypothetically the war could have been prevented. Wars are prevented by maintaining compellingly strong deterrent opposing military force, presence, intelligence and resolve. This was missing at the outset of WWII from the Allies when both Japan and Germany had developed superior militaries for conquest.

Japan was isolated by the vast Pacific Ocean. The U.S. and its Allies employed a strategy of “island hopping” successively conquering Japanese held Pacific island bases to disrupt supply lines and establish U.S. forward bases on a march toward invasion of Japan. A turning point occurred at the Battle of Midway, where code breaking allowed the U.S. to surprise attack and sink four of Japan’s major carriers. The taking of the Marianas Islands put Japan within striking distance of the new B-29 bomber and a bombing campaign that ultimately brought Japan to surrender. The taking of Iwo Jima provided a critical emergency landing strip for battle damaged B-29s and to base fighter escort aircraft for the bombing missions. The costly battle and taking of Okinawa provided an ally base for the planned ultimate amphibious landing assault of Japan, which fortunately became unnecessary.

President Roosevelt rapidly transformed America’s expansive peacetime industries to weapons manufacture banning production of most durable goods. The American workforce was quickly mobilized and retrained. Factories worked around the clock providing middle-class job opportunities for qualified and under-qualified workers through on-the-job training. The redirect of material resources to the war created great shortages of food, clothing, fuel and most other goods at home. All were rationed by the government.

WWII dramatically expanded the role of women and African-Americans in the workplace. The enormous need for round the clock weapons production and the loss of working age men to the war created a great shortage of qualified labor. Factories trained the unqualified and unemployed to assume middle class, skilled manufacturing jobs as assemblers, riveters, welders… dropping the U.S. unemployment rate to 1%. Women left home to make up 37% of the workforce. They also trained and served in large numbers as domestic pilots (WASPs) testing and delivering newly manufactured military aircraft to training bases.

6thbombgroup.com contains many stories, letters and diaries describing roles and sacrifices of individual B-29 crew members. Perhaps the most poignant of these tell the harrowing experience of being under flak and fighter fire on bombing missions, being shot down, captured and subjected to unimaginably brutal conditions in Japanese Kempei Tai “special prisoner” camps. Suggested reading, in sequence:

The U.S. developed three game-change technologies during the war that provided overwhelming military advantage in the defeat of Japan: the B-29 long-range bomber, cluster and atomic bombs. The B-29 was essential to the Ally victory. It was the only airplane in the world capable of flying 14-15 hour bombing missions non-stop from the closest U.S. bases 1500 miles from Japan. Cluster bombs each released multiple incendiaries enabling the complete burn of target areas in the firebombing of Japan.

President Roosevelt rapidly transformed America’s expansive peacetime industries to weapons manufacture banning production of most durable goods. The American workforce was quickly mobilized and retrained. The redirect of material resources to the war created great shortages of food, clothing, fuel and most other goods at home. All were rationed by the government.

Despite the complete devastation of Japan through relentless B-29 bombing and the Potsdam Declaration for Japanese surrender, Japan maintained its “fight to the death” stand. Faced with the pending Ally land invasion of Japan and the projected loss of up to 1 million American lives and 10 million Japanese lives, Truman opted to use his new atomic weapon instead to force quick surrender and save lives on both sides. The atomic bombs dropped on Hiroshima and Nagasaki collectively killed 100,000 people and destroyed 6 square miles or over 50% of the built-up areas of the two cities. Japan declared unconditional surrender immediately following.

Official U.S. records support both sides of this fiercely debated topic. Opponents point to evidence Japan had decided to surrender two months prior to the atomic bombings (and Russia’s entering the war) but couldn’t agree on terms: unconditional surrender as demanded by the Allies or surrender with the emperor remaining as head of government. Proponents point to evidence that Japan’s fanatic military had no intention of surrender, that the atomic bomb gave Emperor Hirohito a face-saving out for ending the war, saving millions of American, ally and Japanese lives from the ultimate ally land invasion of the Japanese homeland.

Because Japan was governed by religious militarism with surrender considered the ultimate dishonor to the emperor, its living deity, Japan’s surrender prior to the ally land invasion is speculative as well as likely terms of surrender following the land invasion.  What is certain is Hirohito surrendered unconditionally immediately following the dropping of the atomic bombs making the land invasion unnecessary. Through the terms of surrender, Japan lost its Asian conquests, its sovereignty was returned to its four main home islands and its government was converted to a democracy. Japan consequently became a nation of peace and post-war ally.

“The best way to win a war is to prevent it from occurring”. To prevent wars the U.S. and its allies must maintain a superior military deterrence, military technology advantage, accurate and timely intelligence, superior manufacturing capacity, oil and raw materials independence, a fit, qualified military age population, ally cooperation, coordination and committed leadership, and national unity supporting a strong deterrence. At the time of the attack on Pearl Harbor, the U.S. was weak on all but three of these: superior manufacturing capacity, oil and raw materials independence and a fit, qualified military age population.

The military conquests of the Japanese Empire between 1937 and its defeat in 1945 are conservatively estimated to have killed 25 million people (Asia Pacific War). About 12 million of these were Chinese and about 75% of the total was non-combatant deaths. Within these numbers, the Pacific War between the U.S. and Japan (1941-1945) cost an estimated 93,000 American lives (additional 208,000 wounded) and more than 2 million Japanese lives.

B-29 Bomber Missions, 6th Bomb Group. Photo: ©Percy Tucker. All Rights Reserved.

B-29 Bomber Missions, 6th Bomb Group. Photo: ©Percy Tucker. All Rights Reserved.