S: (n) National Guard, home reserve (United States military reserves recruited by the states and equipped by the federal government; subject to call by either)
S: (n) Air National Guard, ANG (a civilian reserve component of the United States Air Force that provides prompt mobilization during war and assistance during national emergencies)
S: (n) Army National Guard, ARNG (a civilian reserve component of the United States Army comprised of guardsmen who serve during overseas peacekeeping missions and during local emergencies)
S: (n) Territorial Army (British unit of nonprofessional soldiers organized for the defense of Great Britain)
S: (n) precaution, safeguard, guard (a precautionary measure warding off impending danger or damage or injury etc.) "he put an ice pack on the injury as a precaution"; "an insurance policy is a good safeguard"; "we let our guard down"
S: (v) defend, guard, hold (protect against a challenge or attack) "Hold that position behind the trees!"; "Hold the bridge against the enemy's attacks"
S: (v) guard (take precautions in order to avoid some unwanted consequence) "guard against becoming too friendly with the staff"; "guard against infection"
S: (v) act, move (perform an action, or work out or perform (an action)) "think before you act"; "We must move quickly"; "The governor should act on the new energy bill"; "The nanny acted quickly by grabbing the toddler and covering him with a wet towel"