Meanings according to Rider-Waite:
ASTROLOGICAL SIGNIFICANCE: Mars in Aries as a symbol of zest for life, entrepreneurial spirit, vigor, impatience, and the search for adventure.
KNIGHT OF WANDS The Knight of Wands symbolizes the warmth and even the fire of the soul, manifesting in zest for life, passion, and enthusiasm, but at times shading into impatience, heightened excitability, impulsiveness, and a tendency toward exaggeration. Much therefore depends on which sphere of our life the question concerns, for the card's answer can mean either a comforting warmth or a scorching heat. The impatience expressed by this card means: I want everything, and if possible everything at once. If it does not happen immediately, or if we do not get everything, we become irritated, worked up, aggressive. However, the inner energy inherent in the Knight of Wands, in any case, sets entire strata of being into motion, melts away years of ice, and brings a fresh current into long-familiar situations.
From the book: Hajo Banzhaf. THE TAROT HANDBOOK. Translated from German by E. Kolesov. Publisher: Center for Astrological Research, 1999.
KNIGHT OF WANDS The KNIGHT OF SCEPTERS can symbolize a personality who in the very near future will directly bring about your departure (will send you on a journey: a holiday trip or a grueling business trip), or a person who will bring something new into your life, and whose activity will compel you to turn toward the hitherto unknown. It is not impossible that this person will reveal something within yourself to you. The KNIGHT OF WANDS may also symbolize an absent person who is in the process of relocating. This is also Someone who takes up everything with inspiration, meets new knowledge or new desires with great impetus, conquering the world with his fire and rapture and his firm stance. The KNIGHT OF STAVES is clarity of mind, consciousness of actions, a noble and enterprising spirit of enterprise, a breakthrough, a beginning that carries others along with it. This is an inspired and inspiring conqueror with a flaming soul (this may be either a man or a woman). On the professional plane, this position may refer to a person who takes up a task with great driving force and rapture. The card may also signify something worthy of being brought into being (a costly project, something capable of inspiring).
UPRIGHT POSITION Astrological equivalents: Uranus, Mercury, Sagittarius, Aquarius, a person with a pronounced Ninth or Eleventh House. Through this card a change in your views, in your worldview, may take place. In essence, this card as it were personifies a person who can substantially expand your horizons. At the very least, he can move you out of the sphere of one situation into the sphere of another. REVERSED POSITION Astrological equivalents: a concordant and very low manifestation of the Sun, Mars, and possibly Uranus. A person who brings with him discord, the breaking of relations, in the course of one or another process in which you are involved. He brings with him scandals, quarrels, squabbles, and may set you against your friends forever.
If the card signifies an action. A. Upright card The events indicated by the neighboring cards have already begun, although the process itself has not yet reached its culmination, and your conception of it is far from complete. At the same time, this process is already fully tangible, and it is impossible not to take it into account.
B. Reversed position The process indicated by the subsequent cards undergoes various difficulties in its development. You have to overcome many obstacles, and your plans are realized with great difficulty. Perhaps you should examine what needs to be changed in order that the advance toward the goal might proceed at a swifter pace, less hindered.