Assistance wanted

The current story I'm writing has a small segment set on a US Navy destroyer set in the West Pacific during WWII. Unfortunately, although I'm actually a Navy brat, that would be the Royal Navy, so I could do with some help with details for this part of my story. Any Takers?

I won't let out much of the story at this point, except to say that it's about five Aussie airmen who crash-land on a tropical island. Some time later, they get rescued by said destroyer. The airmen don't have any clothes by this time, so I expect that the Yanks will supply them with basic needs from Stores, as they might do for sailors and others who they might fish out of the sea. Which would be what, exactly?

Another issue might be the actual ranks and suchlike of the destroyer's complement. By that part of the war a RN destroyer might be commanded by a Lieutenant. What would the situation in the USN be? I need to have a basic understanding of the other ranks as well.

There are a few other details I might ask knowledgeable volunteers. If there are any, I would probably continue this as PMs so as not to give the entire game away before I publish.

Thanks in advance for your help,

Penny