re-entrench
/ˌriːɪnˈtrɛn(t)ʃ/ /ˌriːɛnˈtrɛn(t)ʃ/verb
[with object] (Frequently refl.). To entrench again. Also without object with reflexive meaning.
Origin
Late 16th century; earliest use found in Roger Williams (d. 1595), soldier and author. From re- + entrench.