ADATS Air Defence Platoon Includes two ADATS vehicles, one Decal sheet, and one Unit card. Before the war broke out in 1985, the Canadian Defence Force had showed an interest in the Swiss company Oerlikon-Contraves’s Air Defence Anti-Tank System (ADATS). Some test systems have been supplied to the Royal Canadian Horse Artillery in Germany to test its dual-purpose short range surface-to-air and anti-tank missile capabilities in combat.