English is the primary official language used in the Indian Armed Forces, as it is the most widely understood language in the country.

Hindi is also recognized as an official language in the Indian Armed Forces, as it is the most widely spoken language in the country.

All of the above languages are used for communication between officers and soldiers in the Indian Armed Forces, depending on the region and the linguistic background of the personnel.

English is used for official correspondence and documentation in the Indian Armed Forces, as it is the primary official language.

All of the above languages are used for training and education in the Indian Armed Forces, depending on the region and the linguistic background of the personnel.

All of the above languages are used for ceremonial purposes in the Indian Armed Forces, depending on the region and the linguistic background of the personnel.

English is used for communication with foreign military forces during joint operations or exercises, as it is the international language of diplomacy and military cooperation.

All of the above languages are used for broadcasting news and information to troops in the Indian Armed Forces, depending on the region and the linguistic background of the personnel.

English is used for publishing official documents and manuals in the Indian Armed Forces, as it is the primary official language.

English is used for conducting official meetings and conferences in the Indian Armed Forces, as it is the primary official language.

All of the above languages are used for issuing orders and instructions to troops in the Indian Armed Forces, depending on the region and the linguistic background of the personnel.

All of the above languages are used for conducting military exercises and drills in the Indian Armed Forces, depending on the region and the linguistic background of the personnel.

All of the above languages are used for singing military songs and anthems in the Indian Armed Forces, depending on the region and the linguistic background of the personnel.

All of the above languages are used for conducting military parades and ceremonies in the Indian Armed Forces, depending on the region and the linguistic background of the personnel.

English is used for conducting military trials and courts-martial in the Indian Armed Forces, as it is the primary official language.