Was the M103 Heavy Tank America’s Biggest Armored Blunder of the Cold War? Built to counter Soviet armor during the Cold War ❄️🪖, the M103 looked like a battlefield beast with its massive 120mm gun 💥—but its glory ended there. 🐢 Slow speed, endless mechanical problems, and sky-high maintenance demands made it a logistical nightmare. ⚖️ Its sheer weight crippled mobility and made deployment a challenge. 🚫 The US Army quickly favored the more agile M60, leaving the M103 to linger mainly with t