This talk is based on the Watchtower Nov 2013 about 7 shepherds and 8 dukes (them being the secret weapon)
The Bible says that this army is made up of “seven shepherds” and “eight dukes,” or princes. (Micah 5:5) Who are they? They are the congregation elders. (1 Peter 5:2) Today, Jehovah is using many faithful elders to shepherd and to strengthen his people for the future attack of “the Assyrian.” * (See footnote.) Micah’s prophecy tells us that they will “shepherd the land of Assyria with the sword.” (Micah 5:6) One of the weapons they use to defeat the enemy is “the sword of the spirit,” God’s Word.—Ephesians 6:17; 2 Corinthians 10:4.
17. What four lessons can the elders learn from the account we have discussed?
17 Elders, you can learn some helpful lessons from what we have just discussed: (1) The best thing you can do to prepare for the future attack of “the Assyrian” is to strengthen your faith in God and help your brothers to do the same. (2) When “the Assyrian” attacks, you must be completely convinced that Jehovah will save us. (3) At that time, the direction that you receive from Jehovah’s organization may seem strange or unusual. But all of us must be ready to obey any instructions we may receive, whether we agree with them or not, because obeying these instructions will save our lives. (4) If any are putting their trust in the education of this world, material things, or human organizations, they must change their way of thinking now. You must be ready to help any who may not be putting their complete trust in Jehovah.
From reading the article, they attempt to explain that the scripture had fulfillment in Hezekiahs time, Jesus time and today. Seems like thiey are retaining this type and anti type without supporting it biblically.