The origin of the Marines’ “OOHRAH”

Here’s a great article by Cam Beck dissecting the origin of the Marines’ familiar all-purpose exclamation. The best part of the article:

To further demonstrate the indefatigable utility of OO-RAH, I’ve compiled a top 10 list of possible meanings:

1. I am a Marine.
2. I enthusiastically accept your message.
3. I am excited to be here.
4. Pleased to make your acquaintance.
5. What you ask of me, not only will I do, I will do in a manner befitting a Marine.
6. I expect good things out of you.
7. Good job.
8. I am not supposed to be motivated about performing this task, but I will force myself to express excitement for the benefit of my fellow Marines and to tactfully annoy my superiors who gave me the task.
9. I love being a Marine.
10. I am about to destroy something.