TBS Phase I Exam Questions and Correct Answers 2026 | 300+ Marine Corps Leadership, Warfighting, Risk Management & Law of War Questions | MAGTF Communications, Land Navigation, UCMJ & Core Values | The Basic School (TBS)

This comprehensive TBS Phase I Exam study guide contains more than 300 exam-style questions and correct answers covering Marine Corps leadership, warfighting doctrine, risk management, Law of Armed Conflict (LOAC), tactical communications, land navigation, command and control, force protection, military correspondence, casualty evacuation, Marine Corps values, and officer professional development concepts taught at The Basic School (TBS). Designed for newly commissioned Marine officers, officer candidates, NROTC midshipmen, PLC candidates, OCC candidates, and professional military education students, this resource provides an extensive review of the foundational competencies required for success during TBS Phase I training and evaluations. The material reinforces both doctrinal understanding and practical leadership application while preparing students for academic assessments, field exercises, and future command responsibilities. The guide provides extensive coverage of Marine Corps leadership doctrine and officership principles. Students will study the responsibilities of Marine officers to lead Marines effectively, care for their welfare, communicate intent, inspire initiative, and foster mission accomplishment through sound leadership practices. Key topics include leadership principles, ethical decision-making, troop welfare, combat leadership, Marine Corps Core Values, the Five Horizontal Themes of Officership, and the development of mentally strong, physically tough leaders capable of operating effectively in the fog of war. Special emphasis is placed on character, accountability, decision-making, and maintaining the trust and confidence of Marines under command. A substantial portion of the study guide focuses on Marine Corps warfighting doctrine based on MCDP 1 Warfighting. Students will review the nature of war, levels of war (strategic, operational, and tactical), maneuver warfare philosophy, commander's intent, critical vulnerabilities, main effort, combat power, decentralized execution, and mission command. The material explains how Marine leaders employ maneuver warfare to generate advantage, exploit enemy weaknesses, and create rapidly deteriorating situations that overwhelm enemy decision-making capabilities. Additional instruction covers operational graphics, operational symbols, command-and-control concepts, and tactical decision-making frameworks used throughout Marine Corps operations. The document delivers detailed instruction on risk management and operational safety. Students will examine the five-step Risk Management Process, Risk Assessment Worksheets (RAW), hazard identification, hazard assessment, risk control development, and effectiveness evaluation procedures. Topics include probability and severity analysis, METT-T-based hazard identification, engineering controls, administrative controls, physical controls, risk mitigation strategies, and the preservation of combat power through proactive safety management. These concepts are fundamental to both training environments and combat operations, ensuring leaders can make informed decisions while minimizing unnecessary risks. Law of Armed Conflict (LOAC), Law of War, and force protection principles receive significant attention throughout the guide. Students will review the origins of the Law of War, lawful conduct during armed conflict, treatment of prisoners of war, civilian protection, medical personnel protections, proportionality, military necessity, and reporting obligations for violations of international law. Additional topics include deadly force definitions, deadly force authorization criteria, self-defense principles, defense of national security assets, prisoner escape prevention, and force protection responsibilities. These concepts reinforce the ethical and legal responsibilities expected of Marine Corps officers in operational environments. The guide also explores tactical communications and command-and-control systems within the Marine Air-Ground Task Force (MAGTF). Students will study the role of tactical communications in maneuver warfare, information flow throughout the MAGTF, cryptographic controlled item (CCI) accountability, Electronic Key Management System (EKMS) procedures, communications security responsibilities, and the relationship between communications systems and operational tempo. These topics support effective command, coordination, and decision-making across all levels of Marine Corps operations. Land navigation and military mapping skills are covered extensively through examination of military topographic maps, marginal information, contour lines, grid coordinates, distance determination, azimuth calculations, intersection techniques, and terrain interpretation. Students will review index contours, intermediate contours, supplementary contours, depression contours, and map-reading fundamentals required for successful navigation during field operations and tactical exercises. These skills remain essential competencies for all Marine Corps officers regardless of occupational specialty. The study guide further addresses military administration and personnel management. Students will review military correspondence formats, naval letters, endorsements, memorandums, business letters, electronic correspondence, administrative actions, Leave and Earnings Statements (LES), awards programs, recognition procedures, and officer administrative responsibilities. Additional coverage includes Marine Corps policies on illegal drug use, alcohol abuse prevention, hazing, sexual harassment, and leadership responsibilities for maintaining good order, discipline, and professional standards throughout the force. Combat casualty care and support programs are also included through instruction on casualty assessment, CASEVAC prioritization, hemorrhage control, battlefield survivability, and emergency support organizations. Students will review the roles of the American Red Cross, Navy-Marine Corps Relief Society (NMCRS), Marine Corps Family Service Centers, and family support resources available to Marines and their dependents. These topics reinforce both operational readiness and the broader responsibilities of Marine leaders to support the well-being of their Marines and families. The content aligns closely with official Marine Corps doctrinal publications and professional military education references, including MCDP 1 Warfighting, MCDP 6 Command and Control, MCWP 3-40.3 Communications and Information Systems, MCRP 6-11 Leading Marines, MCO 5300.17 Marine Corps Substance Abuse Program, Marine Corps Risk Management doctrine, Law of Armed Conflict guidance, Performance Evaluation System publications, and The Basic School Program of Instruction. These references establish the doctrinal and professional foundation upon which Marine Corps officer development is built. This document is highly relevant for TBS students, Marine Corps officers, officer candidates, NROTC midshipmen, PLC candidates, OCC candidates, infantry officers, logistics officers, communications officers, intelligence officers, military academy students, professional military education participants, and service members preparing for TBS Phase I examinations, officer qualification assessments, leadership evaluations, promotion boards, or advanced military training programs. It is particularly valuable for individuals seeking a comprehensive review of Marine Corps leadership, warfighting doctrine, risk management, Law of War, tactical communications, land navigation, and professional military development. 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