We were in WWII for 44 months. We are on 175 months in Afghanistan. 4 times longer in a few weeks. And no end in sight.
Even worse, the moment we leave, the puppet government we built and support with obscene amounts of money will collapse within days.
This tells me there is no intent to leave.....ever.
As far as I known we still have troops in Germany and in Japan. Not as many as we had for 40 years after the war but we still have troops there.