With short time pending I would do the following, in this order:
1) Learn to count in Arabic, to one thousand (it is not as hard as you think).
2) Memorize the phrases on the little brown card that your S-2 should have, it says Iraqi Dialect. (If you can, learn what each individual word means, that will help later on.)
3) Learn colors and directions (NSEW, Right left, tall,short)(that is important for describing things)
4) You can use text books for whatever you want, and throughout this process. At this point you can start using more texts and programs. What you want to know is present future and past tense conjugation of verbs. and the 500 words that you will most use. You may already know those based upon what I have listed above.
5) The last part of this 'hurry up" language program is to learn circumlocution. This is the ability to talk around a word you don't know. You do it all the time in English, I guarantee. You just need to learn how to do it in Arabic. Once you can do that you have all the tools that you need.
This is what I do when I know I need to learn a language on short order. If you stop learning at any point you are immediately better off, and you are always laying a foundation for future linguistics.
PS I almost forgot that I cannot highly enough recommend
Alif Baa. It is the easiest way to learn the Arabic Alphabet, and nothing will help you more in learning the language than the ability to read, at least the sounds of what is written.