For which citations is the orientation required to be landscape?

The reason the correct response focuses on the specific exceptions noted is that the orientation requirements for military decorations are designed to maintain a consistent and recognizable presentation. In this case, the Medal of Honor and the Meritorious Service Medal have specific guidelines that dictate their presentation format, which typically requires a portrait orientation.

The other decorations are usually presented in landscape format to distinguish them clearly and create a visual hierarchy that aids in identification. By stating that all decorations are generally presented in landscape except for these two medals, it reflects adherence to established military protocol and ensures clarity in decoration presentation. This distinction is crucial as it helps maintain uniformity and respect for the honors bestowed upon service members, while at the same time facilitating a system that is easily understood and visually coherent.