This phrase sounds awkward, should it be "Our attack did not succeed" or "Our attack has not succeeded"
Our attack was unsuccessful
I'm not sure if "Our attack failed." should be accepted, but then again that would be "Serangan kami gagal."...
My thought too..have to be "did not succeed" I guess..
our attack was unsuccessful. its better.
They were waiting for our attack all along!
Maybe think more peaceful thoughts