Which of the following is an example of a combined command?

A combined command is one that consists of two or more individual commands given simultaneously to direct a unit’s movements. The key point is that these commands often convey a specific action or a combination of actions that a unit should undertake.

In this context, "At ease" is indeed a proper example of a command that could be considered a combined command. It indicates a relaxed posture but still maintains the formation, allowing for a degree of comfort while retaining discipline.

Looking at the other options, "Forward march" directs the unit to move in a specific direction, "Right flank" instructs a turn to the right while marching, and "Eyes right" commands troops to turn their heads to the right. These are individual commands focused on specific actions but do not combine multiple commands in the same way that “At ease” does, which affects the general state of the unit as a whole.

Thus, "At ease" effectively serves as a combined command, as it encompasses a broader directive while retaining structure within the drill.