Was Joan given an army?

Considering his own necessity and that of his kingdom (...) the King should not turn away from, or reject, the Pucelle, who says that she has been sent by God, but should give her help, even though her promises are human.

(...)

he must make her prove herself by two means: that is to say through human prudence, inquiring about her life, her morals and her intention, as St Paul the Apostle states: ‘test the spirits, whether they are from God’; and through devout prayer,asking for a sign of some work or divine hope, by which it can be judged that she has come by the will of God. In the same way, God commanded Ahaz to ask for a sign, when God made a promise to him of victory, saying to him: ‘Ask for a sign for yourself from your God’; Gideon did the same, who asked for a sign, and many others, etc.

As to the second manner of testing, the King has asked for a sign from her, to which she replies that she will show it before the city of Orléans, and nowhere else: for so she has been commanded by God.

The King, as far as it is possible for him, must not prevent [the Pucelle] from going to Orléans with his men-at-arms, given the testing that has been done of the said Pucelle, and that no evil is found in her, and considering her reply, which is to demonstrate a divine sign in front of Orléans; in light of her constancy and her perseverance in her purpose, and her insistent requests to go to Orléans, in order to show the sign of divine aid there, [the King] must have her taken there in good faith, hoping in God. For to doubt her, or to dismiss her, without [her showing any] appearance of evil, would be to repel the Holy Spirit, and would render one unworthy of the aid of God, as Gamaliel stated in a council of Jews, regarding the Apostles.

(ed. and trans.) Taylor, C.D., Joan of Arc: La Pucelle, (Manchester, 2006), no.3. Conclusions of the Poitiers Investigation (March-April 1429).

Note the use of language. Joan is not being given an army to lead to Orleans. She is being taken with his army. There is no indication of what her sign might be, or what details she has offered in support of it. Also note the tenor of the Conclusions: 'Considering his own necessity and that of his kingdom (...) even though her promises are human (...) For to doubt her, or to dismiss her, without [her showing any] appearance of evil, would be to repel the Holy Spirit, and would render one unworthy of the aid of God.' This is not an overwhelming vote of support. It's covering his arse as much as anything else.

There is little to indicate that Charles knew he was sending a young girl to lead his army to victory at Orléans which predates Joan having done so already. It is less ridiculous that, having examined Joan theologically and physically (a virginity test conducted by Yolanda of Aragon), Charles gave her permission to tag along with his army to Orléans and show his captains her 'sign' of divine providence. Prophecies are much easier to fulfil when you've already done so.