Hello,

Yes CSE is good department for going in CDS. But you can choose also mechanical engineering department. CDS is combined defence service. You can go for Navy, air force etc from this service. So CSE is important. Because this all departments important for computer. And if you handle good in computer may be you can shift this work which is basis on computer coding etc. And mechanical engineering also important because you know about the machines, you can fixed it also. Now you choose which stream you will choose for your BTech.

All the best.