maximum effort

The maximum effort possible is therefore six times the average pull, but this is possible for only short intervals.

Soon the levers were out to the last notch and the machine was exerting its maximum effort.

What formation obtained the maximum effort from the Greek army?

General Leman considered that he had obtained from his troops the maximum effort of which they were capable and ordered a retreat.

His desire to make good should induce him to put forth maximum effort.