True or False: A quick smoke mission requires the observer to send length, maneuver target line, wind direction, and duration in the call for fire.

A quick smoke mission is specifically designed to provide immediate smoke cover for maneuver units. The call for fire in this context must include critical information to ensure the mission's effectiveness and safety.

The observer is responsible for providing the length of the smoke screen, which determines how far the smoke will extend. This is essential for ensuring that the smoke adequately covers the intended area and serves its purpose in obscuring visibility.

The maneuver target line is crucial as it indicates the direction in which the smoke is needed relative to the involved units. This helps to align the smoke appropriately with the tactical situation on the ground.

Wind direction must be reported to account for how the smoke will drift after being deployed. If the wind direction isn't provided, the smoke may not effectively obscure the relevant areas, which could compromise the operation.

Finally, duration is important to indicate how long the smoke should last, allowing units to take appropriate action based on the tactical needs and the time frame they require for the mission.

Therefore, the answer is true because all those elements—length, maneuver target line, wind direction, and duration—are necessary for executing a quick smoke mission accurately and effectively.