The structures found at Forward Cottage are yet another clear indication of the complex evolution in trench systems between 1915 and 1917. This complexity origins from the constant strategic adaptations of the systems, along with the subsequent phases of repair.

Some unstructured narrow trenches, lacking in revetment or walking boards, indicate a first step in the beginning of a static warfare. The traces documented resemble a type of trench characterised by the very low parapet, consisting of piled up dirt. Similar structures can be dated around the end of April 1915. It is only when the frontline stagnated totally, some time later, profounder and larger trenches were dug.