Mount up怎么翻?可翻为遵命?

中士,把梅森送到基地去,保护好.
遵命!/ 必须地!/ 一定!

我从国外网站找出的mount up解释：
A cavalry term meaning to mount your horse and prepare to move out. In the infantry it is often said "mount out" and means to go into battle or begin a march or some similar e...