Bottom Line Up Front: A military standard to make writing more powerfulWith BLUF the burden is on the writer to be clear and concise, not on the reader to make the connections the writer hopes the reader will make. Leading with BLUF and expanding the acronym later in the sentence leads with the form in which you are most likely to encounter BLUF discussed in a professional context rather than expecting the reader to read the expanded form first and make the connection that “BLUF” is the contracted form of “Bottom Line Up Front” and “Bottom Line Up Front” is the expanded form of “BLUF”.
I’ll own that mistake and leave my original comment up unedited as a testimony to my unobservant off the cuff commentary.