In certain war films, Germans are shown shouting "Feuer!" to give the order to open fire. However, during the movie U-571, the German U-boat commander (Thomas Kretschmann) shouted something that sounded like "lawss!" to fire a torpedo. Subtitles showed "Fire!" as he said that.
What's the exact word? I could find a similar word in German "los", which according to Google translate, it means "off". Could that be the word?