World War II: A death march from Dachau to the Austrian border is halted by the segregated, all-Nisei 522nd Field Artillery Battalion of the U.S. Army in southern Bavaria, saving several hundred prisoners.

During the Holocaust, death marches were massive forced transfers of prisoners from one Nazi camp to other locations, which involved walking long distances resulting in numerous deaths of weakened people. Most death marches took place toward the end of World War II, mostly after the summer/autumn of 1944. Hundreds of thousands of prisoners, mostly Jews, from Nazi camps near the Eastern Front were moved to camps inside Germany away from the Allied forces. Their purpose was to continue the use of prisoners' slave labour, to remove evidence of crimes against humanity, and to keep the prisoners to bargain with the Allies.

Dachau was one of the first concentration camps built by Nazi Germany and the longest-running one, opening on 22 March 1933. The camp was initially intended to intern Hitler's political opponents, which consisted of communists, social democrats, and other dissidents. It is located on the grounds of an abandoned munitions factory northeast of the medieval town of Dachau, about 16 km (10 mi) northwest of Munich in the state of Bavaria, in southern Germany. After its opening by Heinrich Himmler, its purpose was enlarged to include forced labor, and eventually, the imprisonment of Jews, Romani, Germans, and Austrians that the Nazi Party regarded as criminals, and, finally, foreign nationals from countries that Germany occupied or invaded. The Dachau camp system grew to include nearly 100 sub-camps, which were mostly work camps or Arbeitskommandos, and were located throughout southern Germany and Austria. The main camp was liberated by U.S. forces on 29 April 1945.

Nisei is a Japanese-language term used in countries in North America and South America to specify the ethnically Japanese children born in the new country to Japanese-born immigrants, or Issei. The Nisei, or second generation, in turn are the parents of the Sansei, or third generation. These Japanese-language terms derive from ichi, ni, san, "one, two, three," the ordinal numbers used with sei Though nisei means "second-generation immigrant", it more specifically often refers to the children of the initial diaspora, occurring during the period of the Empire of Japan in the late 19th and early 20th centuries and overlapping in the U.S. with the G.I. and silent generations.