Wartime ditch is a term used to describe a TRENCH dug during a war. It is usually dug as a defensive measure to protect soldiers from enemy fire and provide shelter from the elements. The term 'wartime ditch' can also be used to refer to a ditch dug for other purposes, such as to create a barrier or to provide drainage. The crossword solution for this term is 'TRENCH', which is a deep, narrow ditch dug in the ground.