Do you not understand this is language of Christ separating his people from the world? The splitting of the Mount of Olives is not literal, it is prophetic language that speaks of Christ separating His people, which is what Jesus said in Matthew 24:16:
16 then those who are in Judea must flee to the mountains.
You also went past verse 3...but pay particular attention to it:
3 Then the Lord will go forth and fight against those nations, as when He fights on a day of battle.
This is not physical combat...it is Spiritual! Why do you think we are told "the weapons of our warfare ARE NOT carnal"? This is how one departs from the true picture of this prophecy. Ephesians 6:10-18 is in order!
What's your point here? No one denies Jesus shall return...but this isn't Zecariah 14 at all.
Do yourself a favor and study poetic, and apocalyptic language of scripture.
Take for instance the "flood of the dragon"...how many times in the Psalms are floods likened to trouble?
Psalm 32:6
Therefore, let everyone who is godly pray to You in a time when You may be found; Surely in a flood of great waters they will not reach him.
Psalm 69:2
I have sunk in deep mire, and there is no foothold; I have come into deep waters, and a flood overflows me.
Just a couple for you there...
Now...wings are symbolic of God's protection:
Psalm 17:8
Keep me as the apple of the eye; Hide me in the shadow of Your wings
Psalm 36:7
How precious is Your lovingkindness, O God! And the children of men take refuge in the shadow of Your wings.
Just a couple for you there...
How about the wilderness? We're in the wilderness now my friend...because we are in the world, but not of the world, and God is with us. Just as He was with Israel through the wilderness, or with David when he fled into the wilderness from Saul.
This then is how you allow scripture to say what it says! You look at HOW SCRIPTURE uses the language.