How the U.S. Space Force Fights Wars: GPS to Golden Dome

Space warfare does not look like science fiction. There are no dogfights between spacecraft and no visible battles in orbit. Instead, U.S. Space Force Guardians fight from control rooms: detecting missile launches by heat signature, feeding precision timing into GPS-guided strikes, and jamming an adversary's satellite links before the first bomb falls. Understanding these mechanics has become essential for any military or industry actor operating alongside U.S. forces, including across the CEE/SEE region.

What Space Force Guardians Actually Do in a Fight

Space Force's core wartime missions break down into four areas: missile warning, positioning navigation and timing (PNT), satellite communications, and space electronic warfare, both offensive and defensive. None of it is visible on a battlefield map, but all of it underwrites what other services do. Former Chief of Space Operations Gen. Chance Saltzman, who led the service until his retirement in August 2026, described the shift plainly in a recent interview with WSJ: when the other armed services, with decades or even centuries of institutional experience, asked whether the newest branch was ready to deliver under fire, Guardians "said yes, and we delivered."

Missile Warning: From Heat Plume to Intercept in Seconds

Missile warning satellites detect two distinctive signatures of a launch: intense heat and rapid acceleration. Once a satellite picks up that signature, operators characterize the missile type, range and likely ballistic trajectory within a short window, then pass that data to ground based defensive systems such as Patriot or THAAD batteries and to civilians standing in the projected impact zone. During Operation Epic Fury, the U.S. Israeli campaign against Iran that began on February 28, 2026, this kill chain ran in practice. THAAD batteries, cued by Space Force missile warning satellites, engaged Iranian retaliatory ballistic missile salvos targeting U.S. installations across the Middle East, with the chain from infrared sensors in geosynchronous orbit to ground interceptors closing in seconds. Saltzman has noted the scale increase bluntly: Guardians have characterized more missile launches in the past three years than in every year before that combined.

GPS Is a Weapon System, Not Just a Map App

GPS satellites do more than provide directions. They set a shared global timing standard that synchronizes computers, communications networks and strike packages. Precision guided munitions rely on that timing to translate satellite geometry into pinpoint targeting coordinates. Around the most sensitive operations, GPS operators can actively "sweeten" the constellation, temporarily maximizing accuracy over a specific time and place before it degrades back to normal performance. That capability underpinned strikes requiring exceptional precision against deeply buried targets, such as the June 2025 B-2 bunker buster raid on Iranian nuclear facilities, Operation Midnight Hammer. Because GPS is a single point of dependency, the Space Force's own 2040 planning has prioritized navigation warfare (NAVWAR): augmenting GPS with a hybrid architecture combining allied and commercial PNT systems rather than relying on one constellation alone. 

Fighting in the Electromagnetic Spectrum

Space electronic warfare is non kinetic. It disrupts or degrades a target rather than destroying it, and it is reversible, meaning jamming can be switched on and off at will. It works over line of sight, so a ground antenna needs a clear path to the satellite it is jamming or defending, even across geosynchronous distances. Ahead of Epic Fury's opening strikes, this played out at operational scale. Space Force electronic warfare blinded Iran's radar networks and silenced its satellite communications before the first bombs fell, using systems like the Remote Modular Terminal, a deployable jammer built to intercept the uplink between an adversary's battlefield sensors and its targeting network. Chairman of the Joint Chiefs Gen. Dan Caine identified space forces as among the "first movers" in the operation, describing how U.S. Space Command layered non-kinetic effects to disrupt, degrade and blind Iran's ability to see, communicate and respond. 

Golden Dome: Pushing Interceptors Into Orbit

The next architectural layer under development is Golden Dome, the U.S. homeland missile defense initiative built around persistent, global satellite coverage rather than regionally positioned ground sensors. The program combines ground based interceptors, space based interceptors, and directed energy and cyber effects to counter hypersonic and advanced cruise missile threats that current defenses were not designed to stop. The Space Force has awarded contracts worth up to a combined 3.2 billion dollars to twelve companies to develop space based interceptor prototypes, with initial testing scheduled before the end of 2026 and orbital flight demonstrations planned for 2027. The concept has internal skeptics too. Golden Dome's own program manager has acknowledged that space based interceptors might ultimately be dropped from the final design over cost concerns, since continuous global coverage from low earth orbit would require thousands of interceptor satellites. 

An Industrial Opening Most of the Region Hasn't Noticed

Golden Dome's technical debate gets most of the attention, but its contracting structure is arguably more relevant to AD's readers. The Missile Defense Agency's SHIELD vehicle, the primary $151 billion acquisition mechanism behind Golden Dome, has already qualified more than 2,440 vendors across three award tranches. It carries mandatory subcontracting plans for large primes, on ramp provisions that let new companies join the pool throughout its ten year life, and a scope wide enough to cover sensors, structures, cybersecurity and sustainment, not just missiles.

The pathway in is already visible. Elbit America, the U.S. subsidiary of Israeli defense firm Elbit Systems, is among the qualifying SHIELD offerors, which confirms that foreign origin defense technology can enter the Golden Dome supply chain through a U.S. registered subsidiary or a teaming arrangement with a prime contractor, not only through direct foreign military sales. No CEE or SEE manufacturer currently appears on the public SHIELD vendor list. But the mechanism that lets an Israeli owned firm compete as a domestic entity is not exclusive to Israel, and the subcontracting mandates attached to every large prime's task order mean primes are actively hunting for qualified component suppliers, particularly in electronics, precision manufacturing and ammunition adjacent production, categories where several regional manufacturers already hold NATO standard certifications. For defense executives across the region who have spent years chasing one off system tenders, Golden Dome's ten year, multi tranche structure is a different kind of opportunity: a standing procurement pipeline that rewards early positioning through a U.S. registered entity or joint venture over a single tender win. 

The China Factor: Planning for 2040

Space Force's long range planning assumes China as the pacing threat. In April 2026, Saltzman unveiled two unclassified planning documents, the 68 page Future Operating Environment 2040 and the 104 page Objective Force 2040, describing a future dominated by proliferated mega constellations, AI enabled ground space operations and machine speed conflict. The Future Operating Environment projects the U.S. operating more than 30,000 satellites by 2040, driven by the same economics China is exploiting: cheap, reusable launch and mass produced low orbit constellations. Saltzman has argued this is not a numbers race but a capacity question, whether a nation's launch industry can field and continuously replenish the satellites its missions require. The documents also flag the moon and cislunar space as an emerging altitude layer worth contesting, given NASA's own plans for a permanent lunar presence. 

Leadership Transition, Same Trajectory

Saltzman, the Space Force's second Chief of Space Operations, retired at a ceremony at Joint Base Anacostia-Bolling on August 13, 2026, closing a 35 year military career. Lt. Gen. Douglas Schiess has been nominated as his successor and is expected to lead the service's push to roughly double in size under the growth trajectory Saltzman's 2040 documents laid out. The mission set and the strategic logic behind it are set to continue unchanged. 

Why the Operational Picture Matters for CEE/SEE

For defense planners across Central and South-Eastern Europe, the operational lessons of Epic Fury are directly transferable. Most allied militaries in the region remain structurally dependent on U.S. provided missile warning, GPS timing and SATCOM bandwidth, the same enablers Guardians described as decisive in Iran. That dependency is already a live procurement question. European programs like Galileo PRS and IRIS² exist precisely to reduce reliance on a single external PNT and communications provider, mirroring the NAVWAR diversification the Space Force itself is now pursuing. Russian GPS jamming across the Baltic and Black Sea theaters is the regional analog to what Iran attempted against U.S. forces, and the operational answer, based on Epic Fury, is resilience through redundancy rather than any single hardened system. As Golden Dome and 2040 era space architectures mature, the sharper question for regional governments and manufacturers alike is interoperability and access: how allied sensors and PNT systems plug into a U.S. led space architecture, and how allied industry gets inside its supply chain before the tranches close.