How did non-Navajo service members assist the Code Talkers?

Non-Navajo service members played a pivotal role by acting as operators or aides during transmissions for the Code Talkers. This collaboration was essential because the Code Talkers, who used the Navajo language to create secure communications, sometimes needed assistance with the technology and equipment used for sending messages. The non-Navajo personnel facilitated this process by helping to relay messages and ensuring that the communications were efficiently executed, thus enhancing the effectiveness of the Code Talkers' language-based system during military operations.

The other options, although they highlight important roles that service members may fulfill, do not specifically relate to how non-Navajo individuals directly supported the Code Talkers in their unique function. The work of strategists and planners, providing medical assistance, or conducting reconnaissance missions pertains to different aspects of military operations and does not focus on the communication tasks that were central to the Code Talkers' success.