Tobias Ellwood has been elected Chair of the Defence Select Committee.
The forces reservist and former regular soldier said it was a "huge privilege" to take on the role "at such a critical time for UK security".
In his accompanying statement, the MP for Bournemouth East had acknowledged "we are in a period of phenomenal global change, more widespread and profound than at any time outside of world war".
He said that as Chair of the Defence Select Committee he would speak up "for our brave service personnel in scruitinising the Government's national security strategy."
Mr Ellwood's statement also mentioned the rise of new threats in the international defence system and the demand for "greater honesty" about the state of the British Armed Forces, the procurement process, readiness and resilience.
Who is Tobias Ellwood?
Tobias Ellwood has been the Conservative Party MP for Bournemouth East since 2005.
He has first-hand experience with the Armed Forces as he completed the Regular Army commissioning course at Sandhurst and proceeded to join the Royal Green Jackets in 1991.
After reaching the rank of Captain, he transferred to the Reserve of Officers in 1996.
He also served as Minister for Defence People and Veterans from June 2017 until July 2019.