Soldiers have been put on notice and told to be ready for deployment, the Defence Forces have confirmed.
In a statement this afternoon, a spokesperson for the Defence Forces said: "The Defence Forces confirms that we have notified our personnel of the impending change to our force posture and all non-essential activities have been suspended.
"Our focus now is to maximise our preparedness to respond to requests for assistance from the Civil Authorities. Protecting our personnel is our priority and is key to maintaining our capability to provide support to communities and civil authorities, when requested."
It added: "For operational security reasons, we will not comment on specific dispositions of troops or on internal unit procedures at this time."
In a notice which is being widely circulated on social media, soldiers were told all-personnel are to have their back-packs in barracks from March 16, packed and ready for deployment with an immediate notice to move.
It says these packs should be packed “as per admin in the field for 72 hours” or anything deemed necessary.
The packs should include 72 hours of rations, a sleeping bag, warm gear and wet gear.