can you download a game to a USB?

Deus Ex, Human Revolution. I bought for the ole 360 years ago as a digital download. It still shows on my payment history, but I could never locate a way to download it again- especially to a USB drive and not the console itself.

Edit,

Are you asking if you can download the game from the store using a usb?

It has to be a specific USB or you can purchase a external hard drive and install games on their and take that with you and hooked it up to another console that might work.

If you format a Harddrive, and plug it in to someones Xbox who also has the game and copy it across, that way, I'm sure that might work, but you'll have to still enable internet to confirm I think?

Thank you for the information. I bought Deus Ex Human Revolution online through XBoxLive. It shows up in my purchase/payment history. However, it doesn't show a way to actually download it again. Is that possible? I ask because I do not have internet service
right now and would be downloading it through a computer.

BLWJr