Democrats are only anti-war when the war is being waged by a Republican President. If it's waged by one of their own, it's all good, because then it isn't really a war, it's "peacekeeping", a "humanitarian mission", or something equally Orwellian.
Yes, Clinton’s war in Serbia was convenient to say the least.
And Obama killing Gadaffi unleashed the gates of hell in Libya which has been mired in civil war since.
What a mess ...
One thing you can say about Trump he hasn’t started a new conflict unlike is FIVE predecessors!
1812, James Madison, Democratic Republican
Mexican-American War, James Polk, Democrat
Civil War, Lincoln, Republican
Spanish-American War, McKinley, Republican
WWI/Great War, Wilson, Democrat
WWII, FDR, Democrat
Korea, Truman, Democrat
Cold War, Everybody from Truman to Reagan.
Vietnam, Eisenhower-JFK-LBJ-Nixon; LBJ mostly.
Gulf War 1, GHW Bush, Republican
Gulf War 2, Dubya, Republican
I think that’s all the bigger wars. I count 4 Democrat, 4 Republican, 1 D-R, 2 Mixed. YMMV