If capture is unavoidable, what action must the senior Marine take?

When capture is unavoidable, the senior Marine is expected to burn the colors and standards. This action serves several important purposes: it prevents the enemy from acquiring the unit's symbols of pride, honor, and military identity, which could be used against them for propaganda. By destroying these symbols, the senior Marine asserts a commitment to honor and may also help ensure that they do not fall into enemy hands. The act of destroying the colors can reinforce unit cohesion and morale among the remaining members, emphasizing that while physical capture may occur, the spirit and identity of the unit remain intact.

The other options, such as signaling for reinforcements or calling for air support, may not be practical actions if capture is deemed unavoidable; they presuppose there is still a viable chance to reinforce defense or escape. Sending a message to command might also be futile if the situation has already reached a point where capture is imminent. Thus, the destruction of colors and standards represents a definitive action that aligns with military protocol when facing inevitable capture, focusing on preserving the dignity and integrity of the unit.