True, they protest working for the US armed forces. But working for Communist Party of China‘s own army is apparently ok.
https://www.reuters.com/article/us-usa-china-google-idUSKCN1...
https://www.reuters.com/article/us-usa-china-google-idUSKCN1...
(More to the point, this is conflating parts with the whole: Google management is in favor of working with both the US armed forces and Chinese censors, while Google employees are against both.)