The syllabus of CDS or Combined Defence Services Exam for IMA or Indian Military Academy conducted by UPSC (Union Public Service Commission) is as follows:

English Syllabus for CDS Exam:-
UPSC CDS English syllabus includes mostly grammatical questions.
CDS English question paper design for test your English skills it includes the question from vocabulary part like the use of verbs, tenses, words etc. Study these topics in details.
 Fill in the blanks questions
 Sentence Correction questions
 Reading Comprehension &
 Finding errors and omissions etc.

GK Syllabus for CDS Exam:-
UPSC CDS GK syllabus have basic topics from all around us such as latest current affairs about politics, sports, media, marketing, banking sector, economy, finance, awards & events, Indian history and geography etc.
Here examiner wants to test your general knowledge so prepare for all of them especially related to Indian Army latest news and events sections of last 06 months.
 Current Affairs of last 6 months
 Indian Economy
 Indian Politics
 History
 Geography
 Sports
 Banking sector
 Awards & Honors Sports
 Finance
 Agriculture
 Books & Their Authors
 RBI Functions & Policies etc.

Maths Syllabus for CDS Exam
Major topics from CDS exam syllabus for maths section given below:
 Arithmetic
 Geometry
 Algebra
 Trigonometry
 Mensuration
 Statistics