I got caught up in the fervor myself and would love to go back to active duty. Since the U.S. military doesn't want me anymore, I sent an e-mail to the IDF asking them to join. Funny thing was, the e-mail was directed to a U.S. government site which I found out after the fact.
They politely informed me of the age requirements (maybe at 40, I'm too old to brainwash) and that was that.
I hope I didn't delete the e-mails, this has got me wondering.