How might this sentence be best described Notify your OD of your ETA on TDY ASAP. dialect jargon slang ungrammatical speech?

This sentence contains jargon (OD, ETA, TDY), slang (ASAP), and could be considered ungrammatical due to the lack of proper punctuation and Word order. It might be best described as a mix of military and informal language commonly used in quick communication within those circles.