Just cause it looks cool.
February 45, Balkan Air Force Beaus of 19 Squadron went in to support Yugoslavian partisans attacking a German strong hold in Zuzemberk. One of the Beau pilots wanted to get a photo of another Beau firing it's rockets. He pulled in below and behind the lead Beau and while getting pelted by spent cannons shells from the lead Beau that dented his wings, he took a series of shots with the strike camera in the nose of his Beau.
This was one of the resulting shots. Kinda dramatic don't ya think?