Mocking Rishi Sunak's pledge to bring back the compulsory scheme for 18-year-olds, the Labour leader called it a "teenage Dad's Army".
But he failed to answer a question on whether there was "enthusiasm" among young people -including his teenage son and his friends about signing up for it.
And he sidestepped whether or not he supported the principle of National Service - which the Government says will help teenagers get out of their "bubble".
Sir Keir told reporters: "I do accept the proposition that we need strong defences, and that has to be the first duty of any government, but I think this plan is desperate.
"I don't think it'll work. You've seen what military experts have said about it. You've seen what the Government said about it just a few days ago when they were asked, that it would take away from the resources of the military rather than help the military."
This story is from the May 28, 2024 edition of Daily Express.
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This story is from the May 28, 2024 edition of Daily Express.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.
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