2020’s Warchild (Monstress, Volume 5) collects issues 25 to 30 of Marjorie Liu’s ongoing cosmic-horror-fantasy-war comic series. Art is by Sana Takeda.
The previous war between the Federation of Man and the Arcanic Empire ended when the city of Constantine was annihilated, taking over a hundred thousand people with it. The Federation credited the weapon used to the Arcanics — inaccurately, although the Arcanics were in no hurry to correct the error — and lacking their own equivalent, backed down to regroup.
When the Federation’s holy city of Aurum is obliterated by a seemingly similar weapon, the logical inference is that the Arcanic Empire is to blame. They are not but the war is back on regardless.
High on the Federation’s to-conquer list: the city of Ravenna.