A military invasion is performed by the military. No one here is blaming the servicemembers.
Employees at Google are protesting the military's efforts to advance itself, while their real beef is with the executive branch.
If you are asked to say, make poison gas to exterminate the “enemies of the state”, you can always say: “Take it up with the executive branch.” I guess. When faced with the same situation, others may choose to a different response.