on behalf of
flying ace
honour (noun)
rebellion
valour
outstanding
self-sacrifice
significant
nominate
giving up something significant that you want/need in order to benefit/help others
a very good pilot
the act of disobeying rules or fighting against authority
as a representative of another person/group
remarkable
great courage in the face of danger, especially in battle
to formally suggest the name of someone for an honour
important
high respect