The Ministry of Defence are investigating after footage emerged of soliders using a picture of Jeremy Corbyn as target practice.
The clip - originally posted to Snapchat - shows four troops firing at a poster of the Labour leader, captioned: "Happy with that."
It is understood the soliders were using simulated paint rounds rather than real bullets.
Regardless, the MoD have branded the video "totally unacceptable" and announced today that a full investigation had been launched.
An Army spokesperson said: "We are aware of a video circulating on social media, this behaviour is totally unacceptable and falls well below the high standards the Army expects.
"A full investigation has been launched.”
The footage has emerged as Theresa May announced she would be working closely with Corbyn to solve the Brexit impasse.