How to Download the Original Battlefield 2

Hey guys, I was wondering if you could help me out.

Growing up, I spent a lot of time with my grandad. He always had Battlefiled 2 on his laptop at the time. Thinking about the game brings back a lot of memories. At the time, I did not play multiplayer, only singleplayer against bots. I was wondering, if it is possible to download the game somewhere purely for the singleplayer experience? I would like to experience the game again and relive the memories that I have created with my (now passed away) grandad.