"Urban warfare" . "Airdrop" . "Patrolling" . "Counterinsurgency" . . "Parachuting" . "Parachute Troops" . "airborne infantry" . "Mountain warfare" . "Ca\u00E7adores Paraquedistas" . "Irregular warfare" . "Tactical emergency medical services" . "Paratroopers" . "Portuguese Paratroopers" . "Desert warfare" . "paratrooper" . "Portuguese" . . . "Close-quarters combat" . "Portuguese paratroopers" . "paratroopers" . . "Que nunca por vencidos se conhe\u00E7am \\\"May they never be known as defeated\\\"" . "1956" . . . "Direct action" . . "Tracking" . "Forward observer" . . "Paratrooper" . "Reconnaissance" . "Jungle warfare" . "Electronic warfare" . "Long-range penetration" . "Paratrooper Battalion 21" . "Cold-weather warfare" . . "Raiding" . "Maneuver warfare" . "Portuguese Paratroopers" . . "Special reconnaissance" .