Proposed cuts to Britain’s elite Royal Marines and two amphibious assault ships are “militarily illiterate” and “totally at odds with strategic reality”, a committee of MPs has warned.

A damning report by the Commons defence select committee said cuts that had already taken place to the training and military exercises undertaken by the marines were an “embarrassment” and could do “serious damage” to Britain’s relationship with allies such as America.

Julian Lewis, the Tory MP who chairs the committee, said “drastic and dangerous” proposals for further cuts should be subject to “proper parliamentary scrutiny”.

Since 2010 the strength of the Royal Marines has shrunk from 7,020 troops to 6,580, exercises have been cancelled and morale has dropped.

Proposals for a review of national security capability…