Instruct: Classify an Amazon review as either positive or negative.
Query: Submarine warfare...

An excellent story about a few U.S. naval men who attempt to seize a German communications device on board a German sub. While aboard the German sub, complications arise and the crew must flee under Lt. Andy Tyler (Matthew McConuahey) who was recently denied command of his own sub. Andy is forced to take command of the German sub after his superior (Bill Paxton) is left behind in order to carry out the mission objective. Assuming his first command, Andy must earn the respect of his crew and prove that he can lead them to victory - more importantly, survival. With several men down, the skeleton crew begins to believe in Andy and proudly execute his orders as the Germans try to sniff them out from above with depth charges.McConuahey does a superb job playing a young Lieutenant who must fill the shoes of his late commander.An exciting story of submarine warfare and military tactics.