https://archeologie.culture.gouv.fr/palmyre/en/clothes-and-jewellery Clothing.   The reliefs offer an insight into what people might have worn in Palmyra. Although there are examples of citizens wearing the Roman toga or himation, a draped garment worn by the ancient Greeks, most Palmyreans wore typically Syrian clothes, colourful and richly embroidered, influenced by the attire of their powerful neighbour to the east, the Parthian empire.     Below are images dedicated to Zenobia, both modern and reliefs.       

The style of these soldiers seems to have a very distant Asian influence, but it could be due to the influence of the Silk Road, according to some forums and Reddit posts. Chinese and Vietnamese style armor are mentioned.   The problem with this hypothesis is the Parthia/Persia blockade.

I have some descriptions in English and Spanish. The Numidian cavalry, composed of swift horsemen armed with javelins and small fur shields, was one of the most valuable weapons of the Carthaginians along with the troops of Iberian and Gallic mercenaries. The mobility of the Numidian horsemen and their ability to wear down the legionary columns before the clash between infantry impressed the Romans themselves before Sicily fell to the Republic. https://www.ospreypublishing.com/us/osprey-blog/2021/the-numidians-300-bc-ad-300/

The style of these soldiers seems to have a very distant Asian influence, but it could be due to the influence of the Silk Road, according to some forums and Reddit posts. Chinese and Vietnamese style armor are mentioned.

You can see flags on enemy buildings as well.