Well you are consistent in opposing the Death Penalty, but in supporting Just War, you open the very rationale you oppose for abortion.
Just War theory supports the use of force to correct and prevent injustices
OK and who gets to determine what is an injustice that justifies killing? Individuals. At the end of the day the decision to kill somone to improve society's lot in the Just War Theory sits with individual persons.
That is indistinguishable from using abortion to improve society's lot.
The only difference is Who's Beliefs you are using and whom you allow to make the choice. But in the end you are acknowledging the right and reasonableness of individuals killing others who they deem inconvenient for the betterment of society.
That's the reasoning that Stalin used
That's the reasoning we used in Iraq and Afghanistan
That's the reasoning Al Qaeda used for 9/11
You can rationalize that there is a difference, but you are doing so out of your own personal prejudices. And thus you have no basis for objecting to abortion.