The US military is nothing if not students of history, they believe the scientists, they can tell what's happening diplomatically - we're missing our emissions targets.
To me, it is ominous how seriously they are taking it.
And, not for nothing, but the US military facilitates huge amounts of climate research, on the poles and elsewhere. They're a big part of the reason we even know how much trouble we're in.
Tactically/operationally, I'll give you a 'maybe'..
"Personnel is policy", and the true dogs of war, the Pattons, are supplanted by the poodles of DEI.
I'm just not with you here. The fact that DEI and climate change are part of policy for the US military reflects an awareness of the times, not a lack of it.
To believe otherwise is to stand firmly on the wrong side of history, in my eyes.