Hi Joe,
 
  I just thought I would point out that Zechariah 14 shows Jesus standing on the Mount of Olives at his second coming to "fight against those nations, as when he fought in the day of battle," and verse 5 says, "...and the Lord my God shall come, and all the saints with thee."  All the saints are definitely with him at his return.
 
  Could the armies that are with Jesus when he returns that are mentioned in Rev. 19:14 be both the army of all his saints and the army of all his angels?  Don't forget that Jesus said to Satan in Matthew 26:53, "Thinkest thou that I cannot pray to my Father, and he shall presently give me more than twelve legions of angels?"  The Merriam Webster Dictionary that I have says that a legion was "a unit of the Roman army comprising 3,000 to 6,000 men."  It also can mean "a multitude."  Rev. 5:11 also says, "And I beheld, and I heard the voice of many angels round about the throne and the beasts and the elders: and the number of them was ten thousand times ten thousand, and thousands of thousands;"  If this number is referring to the number of the angels round about the throne and the beasts and the elders, then ten thousand times ten thousand is 100 million angels plus thousands of thousands of more angels.  That sounds like a very huge army of angels who could accompany our Lord Jesus and his army of saints to Earth.  Psalm 68:17 also says, "The chariots of God are twenty thousand, even thousands of angels: the Lord is among them, as in Sinai, in the holy place."
 
  As for the armies of Rev. 19:14 that accompany Jesus who are clothed in fine linen, white and clean,  Rev. 19:8 shows us that the Lamb's wife wears the fine linen, clean and white.  However, Rev. 15:7 also shows the 7 angels clothed in pure and white linen, and having their breasts girded with golden girdles.  Even the Jewish high priest had to wear white linen garments on the Day of Atonement.  If all the army of holy angels in heaven wear pure and white linen and all the army of saints with Jesus wear clean and white linen as well, perhaps the armies mentioned in Rev. 19:14 are composed of both holy angels and all the saints.  Just a possibility for everyone to consider since Jesus says in Matthew 24:29-31, "Immediately after the tribulation of those days shall the sun be darkened, and the moon shall not give her light, and the stars shall fall from heaven, and the powers of the heavens shall be shaken: and then shall appear the sign of the Son of man in heaven: and then shall all the tribes of the earth mourn, and they shall see the Son of man coming in the clouds of heaven with power and great glory. And he shall send his angels with a great sound of a trumpet, and they shall gather together his elect from the four winds, from one end of heaven to the other."  Jesus also says in Matthew 25:31, "When the Son of man shall come in his glory, and all the holy angels with him, then shall he sit upon the throne in his glory:"  This takes place at his second coming to Earth when he gathers the nations and divides the sheep from the goats, and the goats are told to depart into the everlasting fire prepared for the devil and his angels.  The holy angels aren't directly referred to as an army of angels in this verse, but all the holy angels do sound like an army or host of angels that accompany Jesus. Of course, Jesus wouldn't need a horse to ride on and neither would an angel with wings nor would a saint who had an immortal body. However, riding on a horse would be symbolic of being in an army's horse cavalry. Jesus riding a white horse would also be symbolic of his being a victor and conqueror over death that was defeated by him. Jesus says in Rev. 1:18, "I am he that liveth, and was dead; and behold, I am alive for evermore, Amen; and have the keys of hell and of death."  (Now if Jesus wants to ride a white horse down from heaven and have all his armies ride white horses as well, then that's what they'll do.) 
 
 God bless,
 
  Donna