Republic of China Armed Forces
Overview
The Republic of China Armed Forces constitute Taiwan's principal military institution, tasked with defending the island of 23.5 million people against a potential invasion by the People's Republic of China across the 130-kilometre Taiwan Strait. With approximately 215,000 active-duty personnel and a defence budget exceeding NT$647 billion (US$20.2 billion) in FY2026 — roughly 2.5% of GDP — Taiwan maintains one of the most heavily armed forces per capita in the Indo-Pacific. The military has undergone substantial transformation since the 2022 extension of conscription to twelve months and the accelerated acquisition of asymmetric warfare capabilities designed to complicate any PLA amphibious assault. Taiwan's defence posture increasingly emphasises anti-ship cruise missiles, mobile coastal defence batteries, sea mines, and survivable command infrastructure — the so-called 'porcupine strategy' advocated by US defence advisers. While not a direct combatant in the Coalition–Iran Axis conflict, Taiwan's strategic calculus is profoundly shaped by it. The conflict's consumption of US missile defence interceptors, the diversion of American naval assets to the Persian Gulf and Red Sea, and the demonstrated effectiveness of asymmetric missile and drone tactics have all accelerated Taipei's indigenous defence production programmes and force restructuring.
History
The Republic of China Armed Forces trace their lineage to the National Revolutionary Army established during the Chinese Civil War, formally reorganised under the 1947 ROC Constitution. Following the Kuomintang's retreat to Taiwan in 1949, the military's sole strategic purpose became defending the island against a PLA cross-strait invasion. During the First Taiwan Strait Crisis (1954–55) and Second Taiwan Strait Crisis (1958), PLA artillery bombardment of Kinmen and Matsu islands brought the two sides to the brink of full-scale war, with US naval intervention proving decisive. The 1979 termination of the US–ROC Mutual Defence Treaty was partially offset by the Taiwan Relations Act, which mandated continued US arms sales. Throughout the 1990s and 2000s, Taiwan acquired F-16A/B fighters, Knox-class frigates, and Patriot PAC-2 missile defence batteries. The 1995–96 Taiwan Strait Crisis, during which the PLA conducted missile tests bracketing the island, catalysed Taiwan's indigenous missile programme, ultimately producing the Hsiung Feng IIE land-attack cruise missile and Hsiung Feng III supersonic anti-ship missile. The 2010s brought democratic consolidation of civilian control over the military and the abolition of conscription in 2018, later reversed in 2024 when twelve-month service was reinstated amid deteriorating cross-strait relations. Major arms packages approved after 2019 — including 66 F-16V Block 70 fighters, 400 Harpoon coastal defence missiles, and 250 Stinger MANPADS — represent the largest US arms transfers to Taiwan in decades.
Capabilities
Primary Capabilities
Taiwan's primary defensive capability centres on anti-access/area denial across the Taiwan Strait. The Hsiung Feng III supersonic anti-ship missile (Mach 2.5+, 150 km range) and 400 US-supplied AGM-84 Harpoon Block II missiles deployed in mobile coastal defence batteries provide layered anti-ship coverage. The air force operates approximately 140 F-16V Block 20 MLU and 66 F-16V Block 70 fighters equipped with AIM-120C-7 AMRAAM and AGM-84 Harpoon. Missile defence relies on 7 PAC-3 batteries, the indigenous Tien Kung III (Sky Bow III) medium-range SAM system, and early warning radars including the Pave Paws LPAR installation at Hsinchu.
Secondary Capabilities
Secondary capabilities include a 26-vessel submarine fleet programme anchored by the indigenous Hai Kun-class attack submarine (first-of-class launched September 2023), 4 Kidd-class destroyers, and 22 guided-missile frigates. The army fields approximately 1,000 M60A3 and CM-11 main battle tanks alongside 108 M1A2T Abrams on order. Taiwan's cyber warfare capacity has expanded significantly, with the Information, Communications and Electronic Force Command conducting defensive operations and electronic warfare. Indigenous drone development — including the Tengyun MALE UAV and Jian Xiang loitering munition — has accelerated following lessons from Ukraine and the current Iran conflict.
Notable Operations
Role in Conflict
Taiwan is not a direct participant in the Coalition–Iran Axis conflict, but the war's strategic implications profoundly affect Taipei's defence planning. The conflict has consumed substantial US missile defence inventories — over 400 Patriot PAC-3 interceptors, 95+ SM-3 missiles, and 48 THAAD interceptors expended since February 2026 — directly competing with Taiwan's procurement pipeline for identical systems. The redeployment of USS Ronald Reagan and USS Abraham Lincoln carrier strike groups from the Western Pacific to the Persian Gulf has reduced US naval presence in the Indo-Pacific to its lowest level since 2017, creating what Taiwanese defence planners privately term a 'window of concern.' Taiwan has responded by accelerating indigenous Tien Kung III missile production, increasing Hsiung Feng cruise missile output, and fast-tracking the Hai Kun submarine programme. The demonstrated effectiveness of Iranian Shahed-136 one-way attack drones and Houthi anti-ship missiles has reinforced Taiwan's investment in asymmetric capabilities and counter-drone systems. Simultaneously, Iran's saturation missile tactics against Israeli missile defences have validated Taiwan's longstanding concern about the numerical mismatch between PLA missile inventory (~2,000 short-range ballistic missiles) and Taiwan's interceptor stockpile.
Order of Battle
The Republic of China Army maintains 3 corps-level commands with approximately 130,000 personnel, fielding 5 combined arms brigades, 3 armoured brigades, and 4 artillery groups. The Air Force operates ~300 combat aircraft from 7 main operating bases, including 140+ F-16V, 55 Mirage 2000-5, and 55 F-CK-1 Ching-kuo indigenous defence fighters. Air defence comprises 7 PAC-3 batteries and 12 Tien Kung III batteries. The Navy fields 4 Kidd-class destroyers, 22 frigates (including 6 La Fayette-class), 4 submarines (2 Hai Lung-class, 2 aging Guppy-class), 12 Kuang Hua VI missile boats, and the first Hai Kun-class submarine in sea trials. The Marine Corps maintains 2 brigades (~10,000 personnel) focused on offshore island defence. Reserve forces total approximately 1.65 million personnel, though readiness varies significantly across cohorts.
Leadership
| Name | Title | Status | Significance |
|---|---|---|---|
| Admiral Tang Hua | Chief of the General Staff | active | Senior military officer directing joint defence operations and force modernisation. Appointed 2023, naval background reflects maritime priority in Taiwan's defence posture. |
| Wellington Koo Li-hsiung | Minister of National Defence | active | Civilian defence minister overseeing the largest military budget in Taiwan's history. Has championed asymmetric warfare doctrine and accelerated indigenous weapons programmes. |
| General Liu Chih-pin | Commander, Republic of China Army | active | Leads army transformation from heavy mechanised force toward mobile, survivable units optimised for anti-landing operations and urban defence. |
| Admiral Tung Pei-lun | Commander, Republic of China Navy | active | Oversees the indigenous submarine programme and expansion of fast attack craft fleet. Responsible for Taiwan Strait maritime denial operations planning. |
| General Liu Jen-mu | Commander, Republic of China Air Force | active | Directs integration of F-16V Block 70 fighters into the combat fleet and expansion of hardened aircraft shelters to survive opening PLA missile salvos. |
Strengths & Vulnerabilities
Relationships
Taiwan's most consequential defence relationship is with the United States, which provides the majority of Taiwan's advanced weapons systems under the Taiwan Relations Act, though without a formal mutual defence treaty. Japan's 2022 National Security Strategy explicitly referenced Taiwan Strait stability for the first time, and US–Japan contingency planning for a Taiwan scenario has accelerated. Australia, the UK, and the broader AUKUS framework create indirect security architecture relevant to Taiwan's defence. Taiwan maintains intelligence-sharing arrangements with the US and Japan, and defence industry cooperation with South Korea on shipbuilding. The ongoing Iran conflict strains these relationships by diverting US military resources and defence industrial capacity away from the Indo-Pacific, a dynamic that Beijing is widely assessed to be monitoring closely.
Analysis
Threat Assessment
Taiwan faces an existential military threat from PLA forces that have explicitly trained for cross-strait invasion scenarios under Xi Jinping's directive to achieve unification readiness by 2027. The PLA Rocket Force maintains approximately 2,000 short-range ballistic missiles within range of Taiwan, complemented by a rapidly expanding air force and the world's largest navy by hull count. The current Coalition–Iran Axis conflict introduces secondary risk by depleting US missile defence stockpiles, diverting carrier strike groups, and demonstrating to Beijing that saturation missile tactics can overwhelm advanced air defences. However, Taiwan's geographic advantages, hardened infrastructure, and growing asymmetric capabilities significantly complicate PLA invasion planning.
Future Trajectory
Taiwan's military trajectory through 2027–2030 centres on three pillars: completing the asymmetric transformation (mass-producing anti-ship missiles, loitering munitions, and sea mines), fielding the indigenous submarine fleet (target: 8 boats by 2035), and rebuilding reserve force readiness. Defence spending is projected to reach 3% of GDP by 2028. The Iran conflict has accelerated indigenous missile defence production while exposing the fragility of US arms supply chains. Taiwan's National Chung-Shan Institute of Science and Technology is expanding production capacity for Tien Kung III interceptors and Hsiung Feng cruise missiles. The critical unknown is whether Taiwan can field sufficient asymmetric capacity before PLA capabilities reach a tipping point.
Key Uncertainties
- Whether the US can simultaneously sustain military commitments in the Middle East and maintain credible deterrence in the Taiwan Strait
- PLA interpretation of US interceptor depletion in the Iran conflict — whether it accelerates or delays cross-strait coercion timelines
- Rate at which Taiwan can scale indigenous missile and submarine production to offset delayed US arms deliveries
- Effectiveness of Taiwan's extended conscription and reserve reforms in generating combat-ready forces by 2027
- Whether PRC leadership views the Iran conflict as a strategic window of opportunity or a cautionary tale about the costs of military adventurism
Frequently Asked Questions
How strong is Taiwan's military compared to China?
Taiwan fields approximately 215,000 active personnel versus the PLA's 2 million, with roughly 300 combat aircraft against China's 1,900+. However, Taiwan's defensive posture leverages geography — the 130 km Taiwan Strait and limited landing beaches — alongside dense air defences and anti-ship missile batteries. The military balance is less about aggregate force comparison and more about whether Taiwan can deny the PLA a successful amphibious landing.
Does Taiwan have missile defence systems?
Taiwan operates a multi-layered missile defence network including 7 US-supplied Patriot PAC-3 batteries, 12 indigenous Tien Kung III (Sky Bow III) medium-range SAM batteries, and the Pave Paws long-range early warning radar at Hsinchu. Total interceptor inventory is estimated at approximately 400 rounds — a number that defence planners acknowledge is insufficient against the PLA's 2,000+ short-range ballistic missile arsenal, driving urgent production expansion.
How does the Iran conflict affect Taiwan's security?
The Coalition–Iran Axis conflict impacts Taiwan in three critical ways: it has consumed over 500 US missile defence interceptors from the same production lines that supply Taiwan, it has diverted US carrier strike groups from the Western Pacific to the Persian Gulf, and it has demonstrated to PLA planners that saturation missile attacks can overwhelm even advanced air defences. Taiwan has responded by accelerating indigenous weapons production.
What weapons does the US sell to Taiwan?
Major recent US arms sales to Taiwan include 66 F-16V Block 70 fighters ($8 billion), 400 Harpoon Block II coastal defence missiles ($2.37 billion), 250 Stinger MANPADS, 108 M1A2T Abrams tanks, and MK-48 heavyweight torpedoes. Taiwan also operates 7 Patriot PAC-3 batteries and seeks additional interceptors, though the Iran conflict has created production bottlenecks for PAC-3 and other missile defence rounds.
Is Taiwan building its own submarines?
Yes. Taiwan launched its first indigenously built submarine, the Hai Kun (ROCS Narwhal), in September 2023 at CSBC Corporation's Kaohsiung shipyard. The 2,500-tonne diesel-electric submarine is currently undergoing sea trials with a target operational date in 2026–2027. Taiwan plans to build at least 8 indigenous submarines to replace its ageing fleet of 2 Hai Lung-class and 2 World War II-era Guppy-class boats.