Tank warfare in Vietnam gets treated as a footnote in most accounts of the war, but this episode of Greatest Tank Battles argues it shaped key engagements once the NVA started fielding its own armor. The film reconstructs clashes where American M48 Patton crews faced Soviet-supplied PT-76 and T-54 tanks, using archival combat footage, maps, and modern interviews with historians and veterans to explain how terrain, jungle cover, and ambush tactics changed what tank combat looked like compared to Europe or Korea. It covers the base at Lang Vei, overrun by NVA armor during the Tet Offensive, and follows the wider push to understand why armored warfare in Vietnam has stayed obscure next to the infantry and helicopter stories that dominate the war's popular memory. Battle reenactment graphics and period photographs fill in where footage is thin, and the narration keeps a steady, procedural focus on unit movements and equipment rather than politics. It sits in a series built around single decisive tank engagements across different wars.