Rijiju, the Minister of State of Home, also hit out at the Congress which had criticised Bhagwat's remarks, saying it should not try to politicise the Army.
"Indian Army is our pride. In emergency situation (not Congress emergency), every Indian must volunteer to stand with Defence Forces. Bhagwat ji only said it takes 6-7 months for a person to be a trained soldier & if Constitution permits RSS cadres has the ability to contribute (sic)," the minister said in a tweet.
"Never try to politicise Indian Army. Congress tried to dilute the Army in 2004 on religious lines by head counting but Army firmly stood the ground," he said.
The Trinamool Congress (TMC) questioned why a minister was defending the RSS chief.
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"After the tweet of Rijiju, it has become even more evident that this government is being remote controlled by the RSS," Trinamool Congress leader Derek O'Brien alleged.
"Kiren Rijiju is not a minister of state but a minister of Sangh. A minister of the government is supporting and defending the RSS," O'Brien told reporters.
Congress president Rahul Gandhi has accused Bhagwat of "disrespecting" the Army and those who have laid down their lives for the country.