All 6 Uses

objective
in
Flags of Our Fathers
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The American high command pinpointed this objective later, in the fall of 1944, although its location and identity would remain top-secret: an ugly little scab of rock and volcano six hundred miles south of the Japanese islands.†
Chpt 5.
Then they'd switch off and proceed toward the objective—riflemen like Ira and Franklin doing what Sergeant Strank and Corporal Block told them to do.†
Chpt 5.
A final invasion rehearsal was conducted, with Tinian as the objective.†
Chpt 6.
The Joint Chiefs had made the capture of Iwo Jima the main Allied objective in the Pacific.†
Chpt 6.
The evening of D-Day minus one, February 18, a date that nine years later would become my birthday, my father and the assault troops still could not see their objective.†
Chpt 6.
Their objectives were a series of low, stony ridges cut through with shallow ravines, filled with piles of rubble.†
Chpt 13. *

Definitions:

(1) (objective as in: our objective is to...)
a goal (some end desired to be achieved)
(2) (objective as in: an objective viewpoint)
fact-based without the influence of personal feelings or preferences

Objective is often contrasted with subjective--which means "influenced by personal belief, feelings, or preferences (rather than being based purely upon fact)."
(3) (meaning too rare to warrant focus)
Less common meanings of objective include:
- In philosophy -- existing outside of the mind.
- In grammar -- the object of a verb or of certain prepositions.
- In optics -- the lens nearest the object being viewed