"Public morale" refers to the overall state of people's spirits and attitudes within a community or society. It reflects the collective mood, confidence, and optimism of individuals towards the current situation or circumstances. Full definition
And, in November 2001, President Bush in a similar fashion to President Roosevelt during World War II, asked some Hollywood studios to create films and television programs that would help with encouragement and public morale while providing entertainment to the soldiers and the people back home. (relevantmagazine.com)
«Fight for Right» quickly became a movement to bolster public morale and Younghusband toured the country giving speeches. (religion-online.org)
I'd say the negative effects of scaling down the Russian armed forces for the economy, for the support of the president in the political system, and for public morale are main factors why Russia still has an inflated military. (politics.stackexchange.com)