Barack Obama Mandela is a Jewish (!) Republican (!!) not-especially-serious candidate for Dianne Feinstein's former Senate seat. In this blog post from 2022 he claims to have served in the IDF during the Second Intifada.

https://web.archive.org/web/20220816084550/https://blogs.timesofisrael.com/israeli-or-jewish-is-being-israeli-a-religion/

This market will resolve YES if this claim is substantively true, including if he was enlisted and served exclusively in non-combat roles. Otherwise it will resolve NO.