Although he opposed the Reagan administration on strategic weapons, AuCoin used his position on the defense subcommittee to improve U.S. conventional arms. On an inspection tour at Fort Benning, he learned from the commander of the United States Army Infantry School that replacement of the aging M47 Dragon anti-tank missile was a major infantry priority because it exposed its operator to enemy return fire until his round found its target. AuCoin, himself a former infantryman, pressed for the development of a modern substitute, often resisting the U.S. Army Missile Command and other agencies that favored other technologies. AuCoin's legislation resulted in the adoption of the FGM-148 Javelin missile, which put its homing device in the round rather than the launcher to allow its operator to fire and immediately seek cover. The Javelin was first used in the 2003 Iraq War and is considered by some military scholars to be "revolutionary" in its potential to put infantry on a more equal footing against armor in conventional land warfare.