at the start of the Korean War, the US ..
People's Volunteer Army - Wikipedia
U.N. troops, largely from the U.S. and Japan and commanded by General Douglas MacArthur, landed at Inchon on 15 September and launched a counterattack. The operation involved some 75,000 troops and 261 naval vessels, and led to the recapture of the South Korean capital Seoul two weeks later. Initial success brought the U.N. troops to the Chinese border by late November 1950, but on 29 November, China entered the conflict and pushed the U.N. forces southward. Seoul fell again on 4 January 1951. Another U.N. counteroffensive in February and March drove the North Korean and Chinese troops back to the 38th parallel. Despite much bloody fighting, the battle lines remained stable for another two years. As the fighting moved up and down the peninsula, ravaging the land, there were an estimated three million casualties. Armistice talks began in July 1951 but repeatedly failed to reach agreement. A truce was signed on 27 July 1953 establishing a demilitarized zone along the 38th parallel and creating a framework for a permanent settlement of the war. Talks have continued fruitlessly ever since.
“Korean War Stories” (PBS) | The Educated Teacher
Building a tank requires a long lead time. Thousands of parts must be manufactured and assembled. Specialized tools and dies are required, as are skilled engineers and workers. Because of the extensive time required to retool and reenergize American tank production during the Korean War, more troops were using the World War II vintage Sherman tank than the newer M-46 "Patton" as late as October 1952. The M-46 was not a new tank from the ground up. It was simply a new turret mated to existing M-26 hulls. Had the Army not been in the process of converting 800 M-26s into M-46s, it is likely that only World War II era tanks would have reached the battlefield prior to 1953.