Final answer:
The two key recommendations for the growth of the NCO corps from the NCOLDAP are the emphasis on progressive and sequential professional military education and the encouragement of broadening assignments for NCOs to enhance their operational and strategic perspectives.
Step-by-step explanation:
Out of the 18 recommendations of the Noncommissioned Officers Leader Development Action Plan (NCOLDAP), the key two for the continued professional growth of the NCO corps pertain to education and broadening assignments. The first recommendation emphasizes the importance of professional military education (PME) that is progressive and sequential; that is, each stage of an NCO's career education should build upon the last, evolving with the individual's responsibilities and experience. The second focal recommendation involves increasing opportunities for NCOs to take on a variety of broadening assignments outside of their primary specialty, thereby enhancing their operational and strategic perspectives.