This is a modified version of @L. Vern's mod:
This version adds a both an "Upgrade All Units" button and a "Wake All Units" button to the Military Overview.
Wake All does NOT affect Fortification Bonuses.
[QoL] Upgrade All Units button in military overview
Download Here Self explanatory, military overview now has a button that will upgrade every eligible unit. Needless to say, this can consume a lot of gold and strategics so be careful when using it lol savegame compatible, should work with any recent vp version
forums.civfanatics.com
Wake All does NOT affect Fortification Bonuses.