The term 'Prepare for War' can be broken down into four crossword solutions: EMBATTLE (8 letters), ARM (3 letters), MOBILISE (8 letters), and rearm (5 letters). Embattling is the process of organizing troops in a battle formation, while arming involves equipping soldiers with weapons. Mobilising is the act of gathering and organizing military forces for active service, and rearming is the process of providing new or additional weapons to existing forces. All of these activities are necessary for a nation to prepare for war.