Germany and Japan are simultaneously carrying out their largest military buildups since World War II. Both countries are moving beyond speeches and commitments to actual spending, new weapons systems, and institutional changes that will reshape their security posture for decades.

Japan's shift is the more dramatic. In 2022, the government adopted three security documents that provided the legal justification to double its annual defense spending. In fiscal year 2024, Japan spent 7.7249 trillion yen on defense-related costs, according to its Ministry of Defense. The country is acquiring Tomahawk cruise missiles beginning in fiscal year 2026—long-range weapons it has not deployed since World War II—and Type-12 anti-ship missiles are scheduled to be operational by March 2026, AP News reported in August 2025. These capabilities give Japan what security strategists call a "standoff strike" ability: the power to hit targets from a distance without putting forces at close range. Tokyo is reacting to two specific threats: China's military pressure on Taiwan and North Korea's growing arsenal of missiles.

Germany's rearmament operates on a different political track but with equivalent speed. Berlin has committed 152 billion euros for defense through 2029—equal to 3.5 percent of its annual economic output, or GDP. NATO Secretary General Mark Rutte and German Foreign Minister Johann Wadephul cited these figures in a December 2025 speech. The 3.5 percent target aligns with the Hague Summit Declaration, a NATO commitment that all members reach this spending level by 2035. In April 2026, Germany went further, releasing strategic documents outlining a plan to have Europe's most powerful military by 2039, including precision long-range strike weapons and a restructured reserve force, Defense News reported.

Where the Two Buildups Connect

What often gets overlooked is that these programs are beginning to coordinate. German Defense Minister Boris Pistorius traveled to Tokyo in March 2026 and proposed a reciprocal access agreement (RAA)—a legal arrangement that allows each country's military to use the other's territory for training and logistics without asking for permission each time. Japan already has similar agreements with Australia and the United Kingdom. Adding Germany would link NATO's largest economy into Tokyo's security network, IP Defense Forum noted.

The practical benefit is clear: both nations gain allies on the other side of the world. But there is a deeper logic at work. Germany wants to prove it remains a serious player in the Indo-Pacific region as it rebuilds its military credibility after decades of focusing on Europe. Japan wants its rearmament to look like a decision born from genuine security concerns, not simply a follow-the-leader approach with the United States.

Both governments face a common narrative attack. Russia has called both buildups a dangerous undo of the postwar world and a global security threat, Reuters reported in May 2026. Japan's government dismissed this as "ridiculous." The complaint is a familiar Russian information tactic—one Berlin has fielded repeatedly since invading Ukraine in February 2022—yet it retains influence in domestic politics. In both countries, memories of World War II aggression still shape how the public thinks about military expansion.

The Larger Picture

This timing is not accidental. Both Germany and Japan are reacting to the same underlying problem: the Cold War security arrangements that protected them are no longer working as they once did. Germany counted on NATO's umbrella and cheap Russian energy. Japan counted on the U.S. military guarantee and a stable region where it faced no serious rivals. The world has changed, and both countries are adjusting accordingly.

The real test will be execution. Military contracts often slip past their deadlines. Germany's armed forces, the Bundeswehr, may struggle to absorb and spend such large sums effectively while actually building new capabilities. Japan's domestic weapons industry is still ramping up production of complex systems. Whether Japan actually gets those Tomahawks and Type-12 missiles on schedule will be one indicator of whether these countries can turn ambitious plans into deployed force.

For anyone watching this space, the proposal that deserves close attention is the Germany-Japan reciprocal access agreement. If it moves from proposal to signed document, and if it includes not just training access but also intelligence sharing and logistics support, it would signal something more significant: the two separate rearmament programs are not just happening at the same time—they are starting to mesh into a unified security architecture linking Europe and the Pacific in a way the postwar world order never allowed.