Hi aspirant,

The syllabus for NDA is common for all the streams. As you are from commerce background you can't get to airforce or navy as that requires mathematics and physics as compulsory subjects. The syllabus for it contains Mathematics and General Studies as subjects. GAT includes English, History, Geography, Physics, chemistry and general sciences as subjects.

To get the detailed syllabus with examination pattern visit NDA Syllabus 2021 - Check Section Wise (Maths & GAT) Syllabus & Exam Pattern (careers360.com)

Hope it helps!!