What term denotes the designated starting point from which operations begin and movements are launched?

• A. Final protective fires (FPF)
• B. Canalize
• C. M4
• D. Line of departure (LD)

Answer: (D)

Line of departure denotes the designated starting point from which operations begin and movements are launched. It marks the boundary between the preparation/assembly area and the battlefield, giving units a fixed reference for when to begin and which direction to move. From the line of departure, the maneuver plan and supporting fires are synchronized, ensuring all elements transition from movement to attack in a coordinated fashion. Final protective fires are pre-arranged, but their role is to stop or prevent enemy action, not to mark the start of the operation; canalize refers to directing or restricting movement, not identifying the initiation point; and the M4 is a weapon, not a planning reference for where a mission starts.