The first anti-tank came out when the first tank was fielded, in WW1. It was a bolt action rifle.

Mail Call - 2002 Rapid Fielding Initiative Anti-Tank and Anti-Anti-Tank Blimp Sub-hunters Cloud Car 5-12 was released on:

USA: 3 October 2004

Anti-Tank rockets (like bazookas) or recoilless rifles that fire anti-tank High-explosive rounds could have been used in the jungles against bunkers or fortifications. But not "Anti-tank missiles". The anti-tank (guided) missiles were developed after WW2.

Anti-armor rifles (which soon fell into obsolescence), anti-tank artillery guns, artillery shells designed specifically to defeat the armor on the top of an armored vehicle, unguided anti-tank rockets, guided anti-tank missiles.

anti tank, anti foot soldier and claymores