This is an illustration of a group of Crusaders. They are armored Knights wearing chainmail and white surcoats adorned with red crosses, a symbol commonly associated witht the Crusades. The central figure stands promenently in the foreground, pointing his sword skyward, leading and inspiring the troops. 

Each Knight hs a helmet that obcures their face, and they carry shields with the same red cross motif. Behind them, the sky is dramatic, with sunlight piercing through the clouds, which adds a divine or epic atmosphere to the scene. In the background, we see a flock of birds taking flight, and more knights who are apart of this army. The ground is rugged and uneven, they’re on a battlefield. The art is highly detailed, with a focus on the realism of the armor and the theatrical lighting, creating a sense of historical fantasy.