RTS suggestions for my boys

I am looking for an RTS to introduce my two boys (9 and 11 years old) to the genre. I have played C&C: Red Alert myself as a young adult, I also dipped my toes into Warhammer 40k: Dawn of War. Very little but AFAIR I liked it.

I am looking for an RTS to see if they like these types of games. My 11-year old specifically said he didn’t like RTS because he “would like to do the fighting himself, not command it”. I have once showed them StarCraft, but it didn’t interest them very much. My 9-year old has probably never really tried RTS.

They have played other games of other genres like Minecraft, Roblox, League of Legends, Valorant and Fortnite extensively.

Any suggestions?