The Republic of Texas Marine Corps has two primary components. The ground combat arm, and the ground-support combat arm. Or so those in ground combat would describe them. Those who fly starfighters disagree with that characterization of their arm. Ground pounder Marines come in many flavors. When the President flies, he flies on Marine aerospace craft, which are guarded by Marines. Marines guard the various embassies scattered all over known space. Marines guard every Navy starship in service, and stand ready to jump out of those perfectly good starships when their services are needed on a planetary surface. Many Marines serve on Marine bases in Texas or the various colonies, acting as a fast combat reserve on a system level. It is ironic that the Marines stationed on these fixed bases are the most transient of Marines, as other commands are always seeking to acquire the best and brightest of them for more challenging duties.