Pursuit will be futile.

Pursuit would be futile.

Bullets which will be futile.

Sir, evacuation may be futile.

The tunnel-digging may be futile.

Maybe the stand on IWO will be futile.

Otherwise the whole exercise would be futile, if not counterproductive.

(b) The exhaustion of local remedies would be futile;

Returning to the status quo ante would be futile.

Any show of resistance would be futile, Captain.