Watson never has been what you might consider a military AI.  Even during the Troubled Times he kept his involvement to the more thinking and supportive roles.  That didn’t keep him from being targeted.  To many of our enemies thinking is the worst sin after all.  And AIs were an abomination against their chosen deity.  Watson tried to reason with them.  Let’s just say that he was better at surviving firebombings than he was at preventing them.