I'm not being defensive.

The early Roman army was tactically limited and its stance during this period was essentially defensive.

The Anti Secession Law is a domestic law of China and a defensive measure for safeguarding State sovereignty and territorial integrity and for bringing about the prospect of peaceful reunification.

The decrease in the number of such checkpoints was a direct consequence of the construction of the Wall something that Israel did not want, but which constituted a barrier against terror.

Their bodies probably reacted defensively, adapting in the short term by changing the genes for the next few generations, or until the danger had passed, a so called soft inheritance running in parallel to slower acting evolutionary forces.