Would I ever fight in a war? Yes.
On one condition however: that the war in question be a CIVIL war, where the southern United States tries to separate from the north... again!
Now, I'm not sure if Obama would measure up to ol' Lincoln, but I would feel obligated to take up arms to keep the union whole. Why, you might ask? Because both Aqizzar and Janet will be among the southern ranks, and I'm sorry to say that the odds will be stacked against us Northerners considering that.
We'll need all the help we can get, and so, saying that, I'm preemptively conscripting Toony. Toonster, I know for a FACT that you're from Canada or Maine or Rhode Island or something, and thus are obligated to fight by my side in the American Civil War 2. Jakkarra, you might be British if I remember correctly, so take a catamaran, go across the Atlantic and head up the Mississippi. You probably won't survive the actual combat, but it might distract Aqizzar long enough to deal a decisive blow in a dramatic, slow-mo fashion; preferably with an American flag, just like Mel Gibson in "The Patriot". That was such a good movie.
Don't think it won't happen people, we have to be prepared for everything! No offense Janet/Aqizzar, but in situations like that, it's friend against friend and brother against brother, there's no room for cowardice. You understand.