Use "retrenching" in a sentence

1. There were unknown sounds of subhuman things proceeding relentlessly forward, stopping, retrenching, to proceed onward again.

2. Synonyms for Curtailing include docking, shortening, reducing, cutting, cutting back, decreasing, diminishing, lessening, retrenching and truncating

3. But I feel the lean movement is doing exactly that, retrenching into operations, reverting to old fashioned monitoring and Consequenting and using the Toyota tools to exert pressure on value-adding employees