In the first place, it's not a "Drive" but a "Push". Back in the dim early days of the war publicity experts borrowed the word "Drive" from the slang of the day. Everyone who went after something had a habit of calling their campaign a drive. When the American Legion wanted to look for new members, they felt drive was as punchless as an empty cartridge. They decided to use the word "Push" which was the same as "Drive" as it goes further in implying relentless effort and resistless force.
