Nuclear physics is notoriously hard to put into practice despite its theory being relatively simpler than other branches of physics.
Even jf you understood theory, theres still a billion caution step you must take.
Also for tactics, WW1 tactics is basically camping out until your enemies are...
From what we've seen so far, healing magic is mainly for fatal wounds. Pharmaceuticals would probably exist and be advanced as well (maybe in the future of their timeline) since its hella cheap to produce a pill that can murder pretty much all bacteria.
Another pretty interesting question is...
Openheimer could very well exist
Since as we saw even magic has its costs and unless magic is somehow more enercy efficient than fucking nuclear, a nuclear bomb could very well exist in this world
In fact jet planes may as well.
Bombers would be pretty practical in this world. Even if theres...