Who is responsible for securing maps for the unit?

The responsibility for securing maps for the unit primarily falls to the S2, or the intelligence officer. The S2 is tasked with providing relevant and timely intelligence, which includes gathering geospatial information such as maps. These maps are crucial for mission planning, troop movement, and situational awareness in various operational environments. By ensuring that accurate and updated maps are available, the S2 supports the commander and the unit in making informed decisions based on the terrain and other geographic factors.

Other options like the S1, S3, and S4 have different roles within the unit. The S1 typically handles personnel matters, the S3 focuses on operations and training, and the S4 is responsible for logistics and supply management. While they may indirectly support the S2's efforts through their respective functions, the direct responsibility for maps rests with the intelligence officer.