Fünf Patronenhülsen

During the Spanish Civil War in 1936, a group of International Brigadiers are cut off, lacking ammunition and water. Five men, plus a radio operator, are chosen by their commander to remain with him and hold off the enemy, whilst the others retreat. After a brief skirmish, the five men are each given part of a message that will only be decipherable in the event that all five return safely. (Summary by TMDaines)