Hello Sir ,

I am very glad to know that you are serving in Indian Army. As per your mentioned query , UPSC is the most toughest exam which is given by thousands of students every year. Here , I am discussing some tips that helps you in your preparation.

1. As the syllabus is very vast so take print out the syllabus and analyse it. It will helps you to divide the content and easily you can concentrate on each topic.
2. After that set the deadline for the completion for your syllabus it will save your time for the revision.
3. Follow current affairs daily as it is the major role that plays in this exam.
4. Try to revise your topics weekly and also write answer writing daily.
5. Consistency is very important in thus exam. So keeo study consistently.
6. Take healthy diet and healthy sleep as well it will keep your mind healthy.

I hope these points will helps you.

Here i am mentioning a link where you can find more about UPSC.

https://competition.careers360.com/articles/how-prepare-for-upsc-ias