Headley Court currently has 66 ward beds for intensive treatment
Thirty extra ward beds are to be provided at the rehabilitation centre in Surrey for wounded soldiers being nursed back to health.
The government has announced the number of beds for patients needing the most intensive treatment at Headley Court will increase from 66 to 96 this year.
The Defence Medical Rehabilitation Centre, near Epsom, treats personnel injured in Afghanistan and Iraq.
Veterans minister Kevan Jones said the number of beds was regularly reviewed.
In a written ministerial statement, he said: "Many of its patients, particularly those who have suffered severe injuries, need to return to the unit for further treatment at intervals, often over a period of years.
"The unit's facilities currently include 66 ward beds and 120 other beds for patients.
"As prudent contingency planning, we propose to increase the number of ward beds available in the near to medium term."
Mr Jones said existing clinical facilities at Headley Court would also be updated and expanded in the longer term.