Quoth the Wiki:

His most famous work occurred on June 6, 1944 (D-Day) when he swam ashore with the second assault wave on Omaha Beach. He was armed with two Contax II cameras mounted with 50 mm lenses and several rolls of spare film. Capa took 106 pictures in the first couple of hours of the invasion. However, a staff member at Life in London made a mistake in the darkroom; he set the dryer too high and melted the emulsion in the negatives in three complete rolls and over half of a fourth roll. Only eleven frames in total were recovered. Capa never said a word to the London bureau chief about the loss of three and a half rolls of his D-Day landing film.

Mexican suitcase photos here