Rivalries and teasing aside, Military service - whether in the Empire's Forces or the Territorial Defense Services - is a great leveler for providing common ground for positive relationships, as seen here with Lieutenant Grienne of the Emperor's Naval Force and Warrant Officer Scratch of the King's Rangers sharing a grin while on duty.

Lt Rache Grienne & Cat Scratch {c} Me
Art by Teira, who as usualy, took the idea and executed it flawlessly.
https://www.instagram.com/teira.artbook/

*One thing i love - thick hair like Cat's wuill probably not stay tucked neatly under a uniform cap, and so he has a some slightly crazy hat hair happening.