If weapons are mixed with the armor or shield in one’s dream, it means that one’s enemies cannot reach him or cause harm to him.
If one sees his armor laying down at his reach in his shop or place of business while dealing with his customers in a dream, it means that such a merchant is untruthful and he uses claims of honesty as a shield. (Also see Coat of mail)... Islamic Dream Interpretation
Vulnerability, or the need for protection.
Being distant and unfeeling. Putting up barriers between yourself and the world so as not to get hurt. Please note that this can pertain to anything appearing in the dream that is armored, like a truck or tank.
In Christianity, the armor of God that provides the believer with all the tools necessary for righteous living. Similarly in Judaism, a special breastplate was worn by early high priests, symbolizing their authority and connection with the Divine.
Psychically, wearing a helmet reveals the potential need for psychic or mental protection of any nature. You may be studying too hard, or be under some kind of psychic attack.
Knight in shining armor: Being rescued, or hoping for aid in rime of need. Alternatively, the desire to venture forth on a quest for personal honor, or fight for a just cause.... The Language of Dreams
An armored truck may also signify the need to protect your bank account from yourself or others, or it may be an indication that you have met someone who heavily guards their money and other resources. (See Truck)... Ariadne's Book of Dream
2- Psychologically, the knight in a dream signifies the guiding principle. He is that part of ourselves which is sometimes known as the Higher Self, the spirit guiding the physical.
The black knight is the embodiment of evil. It is interesting that often the white knight appears with his visor up, whereas the black knight appears with his visor down.
3- Initiation, in order to develop one’s finer qualities.... Ten Thousand Dream Dictionary
Depth Psychology: The knight is either a sign that you need protection right now, or that you are very chivalrous toward another person. See Armor, Castle.... Dreamers Dictionary
The black knight is often seen as the embodiment of evil. It is interesting that often the white knight appears with his visor up, whereas the black knight appears with his visor down.... Dream Meanings of Versatile
Depth Psychology: As a weapon, the tank is a symbol of Aggression.... Dreamers Dictionary