What are the group-A Civil services in India?

 There are 16 Group-A services in India, namely:

• Indian Audit and Accounts Service (IAAS)
• Indian Civil Accounts Service (ICAS)
• Indian Foreign Service (IFS)
• Indian Corporate Law Services (ICLS)
• Indian Defense Estate Services (IDES)
• Indian Defense Accounts Services (IDAS)
• Indian Information Services (IIS)
• Indian Communication Finance Services (ICFS)
• Indian Ordinance Factories Service (IOFS)
• Indian Postal Service (IPoS)
• Indian Railway Personnel Service (IRPS)
• Indian Railways Account Services (IRAS)
• Indian Revenue Service (IRS)
• Indian Railway Traffic Service (IRTS)
• Railway Protection Force (RPF)
• Indian Trade Service (ITS)