Apparatus and associated methods relate to fence bracing apparatus having a tension adjusting module(s) to diagonally brace a fence post(s) and/or adaptive fence bracket(s) for flexibly bracing the fence post(s) for various fence configurations. In an illustrative example, a fence tensioning module may include a tension regulation module coupled to a tension adjusting link. For example, the fence tensioning module may adjust a position of the tension adjusting link relative to the fence tensioning module so that a tension of the tension adjusting link is adjusted. The adaptive fence bracket, for example, may include a butterfly clamp and an adaptive C-bracket having two sidearms configured to couple, for example, to fence rails and/or other tension members to form various fence bracing configurations. The butterfly clamp, for example, may include a ridge portion to engage a blade of the fence post. Various implementations may advantageously provide adaptive and secure fence construction.