Final answer:
The information provided does not specifically address the March 1980 Army NCO guide changes but rather focuses on WWII recruitment and leadership under Eisenhower. Actual recommendations for changes to the NCO guide require specific historical military documentation.
Step-by-step explanation:
The question pertains to changes in the U.S. Army's Noncommissioned Officer (NCO) guide in March 1980. However, the provided reference information primarily discusses the World War II era, focusing on the massive recruitment and the leadership of Dwight D. Eisenhower. It does not directly address changes to the NCO guide. Nevertheless, the changes recommended in the Army NCO guide could involve any aspect of NCO responsibilities, including but not limited to training, administrative duties, and leadership development.
While it's important to note that the actual recommendations for changes in the March 1980 Army NCO guide would need to be sourced from specific historical military documents or reliable secondary accounts pertaining to the period and subject, the options provided in the question (physical training, communication techniques, educational opportunities, and administrative processes) could all be considered relevant areas for potential improvements or updates in an NCO guide for any given period.