Post WW2...
Lost:
Korea
Nam
War on drugs
Two Iraq wars
Lebanon
Afghan
Sudan
Win
Kosovo
Cold War
Trivial
Panama
Nicaragua
Cuba
Uk track
Win
Suez
Borneo
Malaya
Aden emergency
Oman
Kosovo
Ireland
Cyprus insurgency
Kenya insurgency
Falklands
Iraq invasion x2 (we didn't determine final outcomes)
Afghan conquest (as above)
Cold War
Iranian embassy hostage situation
Coordinated overthrow of Idi Amin
Lost
War on drugs
Well I think that speaks for itself.