Sitrep looks at the future shape of the Navy as the government talks of a new ‘golden era in shipbuilding’ and assesses what it can learn from current conflicts. Expert analysis from Commodore Steve Prest who’s just left the service and former Naval warfare officer Professor Peter Roberts from RUSI. Sitrep’s Simon Newton reports from Poland on Exercise Immediate Response, designed to reinforce the Alliance’s Eastern Flank and deter Russia, with 2,500 UK troops taking part and we hear from the Telegraph’s Colin Freeman in Ukraine.  Finally, Sitrep discusses how soldiers should balance taking ground in conflict with the duty to protect historic sites and artifacts with Dr Peter Caddick-Adams and the Commander of the Cultural Property Protection Unit Roger Curtis.