"Militia of the Lord" is a symbol of all the Righteous who are clothed in the knowledge of the Word of God's Will and are able to destroy, expose various religious and other sinful "strongholds" of false teachings, dogmas, to destroy any opposition to God's Commandments. 

"Militia" is a symbol of people who are able to wage spiritual warfare with untruth, sin, with any violations of God's Commandments, with false religious and other world rulers and their accomplices, these are the people who are fully armed with God's Word and ready to defend its truth from any distortion.

Negative Meaning

"Militia" is a symbol of ungodly, embittered people who join together in a sinful "Militia" - a unity, a fellowship to violently oppose the Will of God, to "war" against God, against His Laws and Commandments, against the Righteous.