Energy

"“When evening comes and all are exhausted, hungry and possibly dispirited, particularly in unfavorable weather at the end of a march or in battle, you must put aside any thought of personal fatigue and display marked energy in looking after the comfort of your organization, inspecting your lines and preparing for tomorrow.”"

https://3x5leadership.com/2018/05/17/do-all-things-with-energy-and-optimism/