explaining?
what you see in the pictures are three Nieuports over Venice. During 1917-18, Venice was on the frontline of the war, with the Austrians occupying South Tirol and Friuli.
A French squadron, Escadrille 561, was based in Venice (at the Lido, there is still an airfield there) to protect it from marauding Austrian aircraft.
The individual aircraft were decorated by the pilots.
The dragon was Nieuport 24 no 4393, flown by MdL André de Loyseau de Grandmaison.
The Faun (or possibly the Greek god Pan, not a mermaid) decorated Slt Jean Bignin's Nieuport 24:

while 'Ocio! Fiol d'un can!' ('Look out! Son of a dog!' in the local dialect) was flown by MdL Edouard Corniglion-Molinier.

These three men together scored 5 victories over the Austrians, of the total of 12 victories for the entire squadron.
https://en.wikipedia.org/wiki/Escadrille_Spa.561and if you're not afraid of the French language:
http://albindenis.free.fr/Site_escadril ... lle561.htmI have been thinking of painting a few more of the 561st aircraft, but the (Big Radials) Nieuports in French colors do not seem to be that popular.
The formation shots were made with FlightControlReplay.