In a recent interview, Peter Jackson dished about the logistics that went behind the making of the mega battle sequence in The Hobbit: The Battle of the Five Armies.

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Speaking to Entertainment Weekly, Jackson spoke about the technicalities and preparation for the massive conclusion to The Hobbit trilogy.

The director stated that the first priority was to chalk up the landscape for the grand event, and how the various armies would be placed in the scheme of things.

What We Know So Far About The Final In The Hobbit: The Battle of the Five Armies

"Before we could loose the first arrow, we had to design the landscape itself and figure out, 'Okay, if we have 10,000 orcs, how much room are they going to take up?' " Jackson said. " 'Are they going to fill up the valley or look like a speck?' Then we could start drawing the arrows on the schematics."

The map for the battle scene, which is a whirl of arrows sketched in various colors, is also revealed in the report. The director also went into details like the way eagles are portrayed in the scene.

"Tolkien uses eagles in a way that can be kind of awkward because they tend to show up out of the blue and change things pretty quickly," he said. "So here they're just part of the plan, not the saviors. I mean, I do realize that if the eagles had just been able to bring Frodo to Mount Doom in Lord of the Rings and let him drop the ring in, those movies would have been much shorter."

The Hobbit: The Battle of the Five Armies will hit theaters on December 18. 

Watch the teaser for the movie here:

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