The project MONUMENTS AT RISK focused on recording the cultural stock of the Hellenic Armed Forces, assessing the threatening impact of climate change. The aim was to record the different cultural assets, document their preservation state and conclude to specific measures and strategies towards climate change effects. To this direction three main asset categories were defined, dated from the mid of 19th to the mid of 20th century, including historic structures, war museums exhibits and underwater heritage (warship and aircraft wrecks). A flexible online platform was developed, where each asset category was related to a set of information, while in a short period 186 assets were recorded, representing an indicative sample of cultural assets. For the validation of the outcomes onsite inspections were performed for each asset category, including the naval fortification complex in N. Euboea and exhibits of the Hellenic Air Force museum in Dekelia Air Base. In all cases, they were directly exposed to variable weather conditions (frost, rain, wind, solar radiation), as well as accidental actions (fires, floods etc.) intensified due to climate change, whereas limited interventions were recorded. A lack of relevant protocols regarding their systematic protection and preservation was therefore highlighted.