I always have a hard time with these two words and use them occasionally enough in my writing that it’s about time I try to learn them.

It’s always a question who is going to win in a battle when conquest is the goal to every military leader and the loser ends up becoming the conquered. I hope that remembering that questioning the results of these two actions gives me a hint to their spelling. So I use QUE (from the word question) as my reminder for both.

Question of who is the winner
conQUEst
conQUEred