Here is the correct answer of the given question above. The town that is the Gateway to the Milford Trek is that, the Trek starts out at Lake Te Anau. Hope this is the answer that you are looking for.
<h3><u><em>Answer: On October 19, 1781, British General Charles Cornwallis surrendered his army of some 8,000 men to General George Washington at Yorktown, giving up any chance of winning the Revolutionary War. ... The Franco-American siege exhausted the British army's supplies of food and ammunition.</em></u></h3>