Indo-Pacific — 2026-06-12

Taiwan Tests HIMARS Missiles on Western Coast in Major Live-Fire Drills

BLUFTaiwan's westward HIMARS demonstration validates strait-denial capability, but the follow-on 82-unit sale is unlikely to clear congressional notification by December, capping the force at current inventory.

Taiwan's Army 10th Corps conducted its first live HIMARS firing into the Taiwan Strait on June 10, deploying six launchers along both banks of the Dajia River estuary in Taichung, the first such exercise on the island's west coast rather than from southeastern ranges firing eastward into the Pacific 123. The 58th Artillery Command fired 32 of 36 scheduled M28 reduced-range practice rockets in three waves toward a target nine kilometers offshore; four rockets misfired, with cause still under investigation, Taiwan News reported citing CNA 1. Launchers relocated to new firing positions within three minutes of each salvo, per Taiwan's Ministry of National Defense 4. The Associated Press reported that an additional 82-unit HIMARS sale announced in December now appears on hold following President Trump's meeting with Xi Jinping last month 3.

Analysis
The 82-unit follow-on HIMARS tranche is unlikely to receive formal congressional notification by December 12, 2026. Confidence is moderate, given that the diplomatic hold AP reported after last month's Trump-Xi summit lacks US government confirmation and Trump's arms-transfer record runs in both directions. Taiwan has now demonstrated west-coast operational posture, shifting HIMARS employment to the strait-facing threat axis precisely as the supply pipeline stalls. The exercise may instead be deliberate signaling to Washington aimed at forcing the stalled sale, rather than marking a standing shift in deployment posture. If the hold persists, Taipei's planned 111-unit force is capped at its current batch, narrowing the asymmetric strike depth it just demonstrated it can deploy.

4 sources

Taiwan test fires HIMARS for first time off west coast - Taiwan News
Taiwan's military deploys newly acquired U.S.-supplied High Mobility Artillery Rocket System - OAN
Taiwan drills with U.S. rocket system, firing in China's direction - KPBS / Associated Press
Taiwan Tests HIMARS Missiles on Island's West Coast in Major Live-fire Drills - USNI News