I feel this would be closer to a WWII scenario than WWI, which didn't have the same size or formation of bombers.

punished_K said:

I feel this would be closer to a WWII scenario than WWI, which didn't have the same size or formation of bombers.

The artist tagged it with WW1.
Besides the biplanes and extensive trenches on the ground make the WW1 inspiration very clear.

Punished_Kiki said:

I feel this would be closer to a WWII scenario than WWI, which didn't have the same size or formation of bombers.

Please look up the following aircraft: Handly Page O/100, Handley Page O/400, Caproni Ca 3, Gotha G.IV, Friedrichshafen G.III, Zeppelin Staaken R.VI, Sikorsky Ilya Muromets

WW1 was the start of strategic bombing. WW2 didn't have biplane bombers.