"The Loneliness of the Long-Distance Walker" is a missing episode in the British comedy series Dad's Army.
Mainwaring and the others quickly rally to keep him in the Home Guard, despite the fact that his mother, Mrs. Pike, is adamantly opposed to him leaving.
In the end, a surprising twist reveals that Pike doesn’t need to join the regular army after all, restoring harmony and securing his place in the platoon once more.
When Walker is called up, he applies to the Military Service Hardship Committee, which rejects him on the grounds that he does not keep books for his business.
After Jones's attempts to sabotage his medical test fail, Walker is invalided out because he is allergic to corned beef.