The 1632 Battle of Rain proved that mobile artillery could win a war
King Gustavus Adolphus revolutionized 17th-century warfare at the Battle of Rain by proving that light, mobile cannons could shatter even the most disciplined and entrenched infantry formations.
During the Thirty Years' War, the Swedish King Gustavus Adolphus fundamentally changed how wars were fought on April 15, 1632. At the Battle of Rain, he used highly mobile, light artillery to provide continuous fire support for his moving troops, a tactic his opponents in the Holy Roman Empire were unprepared for.
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