ಪುಣೆಯ ರಾಷ್ಟೀಯ ಮಿಲಿಟರಿ ಅಕಾಡೆಮಿ, ಡೆಹ್ರಾಡೂನ್‌ನ ಭಾರತೀಯ ಮಿಲಿಟರಿ ಅಕಾಡೆಮಿ ಯಲ್ಲಿ ತರಬೇತಿ ಪಡೆದು,ಜೂನ್ ೧೯೬೩ರಲ್ಲಿ ಭಾರತೀಯ ಸೇನೆಯಲ್ಲಿ ನಿಯುಕ್ತಿಗೊಂಡ ಅಮರಿಂದರ್ ಸಿಂಗ್‌, ೧೯೬೫ರಲ್ಲಿ ಸೇನೆಗೆ ರಾಜೀನಾಮೆಯಿತ್ತರು. ೧೯೬೫ರ ಭಾರತ-ಪಾಕಿಸ್ತಾನ ಯುದ್ಧದಲ್ಲಿ ಸೇನೆ ಸೇರಿ ಕ್ಯಾಪ್ಟನ್ ಹುದ್ದೆ ಪಡೆದು ಹೋರಾಡಿದರು.
೧೯೮೦ರಲ್ಲಿ ಶಾಲಾ ಸಹಪಾಠಿ ರಾಜೀವ್ ಗಾಂಧಿ ರಾಜಕೀಯ ಸೇರಿದಾಗ,ಅಮರಿಂದರ್ ಸಿಂಗ್‌ ಇತರ ಡೂನ್ ಶಾಲೆಯ ಗೆಳೆಯರೊಂದಿಗೆ ರಾಜೀವ್‌ರ ಜೊತೆಗೂಡಿ, ಪಂಜಾಭ್‌ನಿಂದ ಲೋಕಸಭೆಗೆ ಆಯ್ಕೆಯಾದರು . ೧೯೮೪ರ ಆಪರೇಷನ್ ಬ್ಲೂಸ್ಟಾರ್ ವಿರೋಧಿಸಿ, ಕಾಂಗ್ರೆಸ್‌ ಪಕ್ಷಕ್ಕೆ ರಾಜೀನಾಮೆಯಿತ್ತು, ಶಿರೋಮಣಿ ಅಕಾಲಿದಳಕ್ಕೆ ಸೇರಿದರು. ತಲ್ವಾಂಡಿ ಸಬೋ ಕ್ಷೇತ್ರದಿಂದ ಶಾಸಕರಾಗಿ ಕೃಷಿ, ಅರಣ್ಯ ಮತ್ತು ಪಂಚಾಯ್ತಿರಾಜ್ ಖಾತೆ ಸಚಿವರಾದರು. 

೧೯೯೨ರಲ್ಲಿ 
In 1992 he broke away from the Akali Dal and formed a splinter group named Shiromani Akali Dal (Panthic) which later merged with the Congress in 1998 (after his party's crushing defeat in Vidhan Sabha election in which he himself was defeated from his own constituency where he got only 856 votes) after Sonia Gandhi took over the reign of the party. He was defeated by Prof Prem Singh Chandumajra from Patiala Constituency in 1998 by a whooping margin of 33251 votes. He served as the President of Punjab Pradesh Congress Committee on two occasions from 1999 to 2002 and 2010 to 2013, he also became Chief Minister of Punjab in 2002 and continued until 2007.

In September 2008, a special committee of Punjab Vidhan Sabha expelled him on the count of regularities in the transfer of land related to the Amritsar Improvement Trust by the Akali Dal-Bharatiya Janata Party led government. In 2010, the Supreme Court of India held his expulsion unconstitutional on the grounds it was excessive and unconstitutional.

He was appointed as chairman of Punjab Congress Campaign Committee in 2008. Captain Amarinder Singh is also a Permanent Invitee to the Congress Working Committee since 2013. He defeated senior BJP leader Arun Jaitley by a margin of more than 1,02,000 votes in 2014 general elections. He has been a member of the Punjab Vidhan Sabha for five terms representing Patiala (Urban) thrice, Samana and Talwandi Sabo once each.

On 27 November 2015, Amarinder Singh was appointed President of Punjab Congress in the run up to Punjab elections slated for 2017.

ಭಾರತೀಯ ಸೇನೆಯ ಸೇವೆ ವಿವರ
President of All India Jat Maha Sabha
Personal life
Books