Half life game i can't remember

i need assets from an old half life game for a tf2 map, the game was top down and possibly strategy based. i need the combine props from it for a tf2 map because they fit the art style for my cross over map, if you can't find the props i need for the map the least you could do is tell me the game

 

Might you be thinking of Lambda Wars? It was a Real-Time Strategy game (RTS) that took place within the world of Half-Life 2.

Lambda Wars on Steam: https://store.steampowered.com/app/270370/Lambda_Wars_Beta/

 

Thank you kind sir!