Robert has joined forces with 150 Conservative MPs and peers who have written to the Prime Minister demanding that the plans to investigate Northern Ireland veterans come to a halt.
The letter, which is also backed by four former Chiefs of Defence Staff, a former First Sea Lord and a former General Officer Commanding in Northern Ireland, says a new Historical Investigations Unit would put "service and security personnel at an exceptional disadvantage".
Robert said: "I am calling on the Prime Minister to end the spectacle of spurious historic allegations. This issue is not going away and we as politicians must do our duty to those who have served and done theirs."