Whatever nine brave blokes from Lyneham went to Iraq to do, it wasn't to kill. Certainly not to kill directly. Many would have the very highest motives - doing their duty to their country, and putting their lives on the line to make the world a better safer place.
And while criticism of the war might lead some particpants to be defensive, most would privately admit to grave misgivings that any innocent bystanders have lost their lives, and perhaps even to regret that so many enemy lives have been lost.
It's only natural, however, that they should be moved to express their condolences (and even grief) on a thread in the PPRuNe military forum when nine of their number die in a single incident.
Most aircrew (the vast majority) are highly intelligent blokes (often slightly right of centre politically) and to imply that they're cold blooded killers who should somehow deserve to 'kill or be killed' is ignorant and stupid, and is extremely insensitive in these circumstances.
Most of those here are extremely tolerant of outsiders who have any kind of sympathy, empathy or interest in, or knowledge of military aviation - even journos. I'd gently suggest that you haven't demonstrated those characteristics, and that you should expect an angry response. You're lucky that no-one has pointed out that the lowliest, youngest ALM on No.47 Squadron is worth a dozen of you or I.