31 July 2012 Last updated at 13:27 ET
The age at which members of the armed forces claim pensions could rise from 55 to 60 under new government reforms.
The Ministry of Defence says the changes are necessary to ensure pension schemes for military personnel are affordable and sustainable longer term.
Service personnel will still not have to contribute personally and will get a lump sum if they leave after the age of 40 with the required years of service.
The new conditions are to be introduced from April 2015.
The MoD insists those in uniform will still have better terms than most other public sector workers.
It has also promised to consult before bringing the changes into force.
