the m67 was not completely withdrawn from infantry service. instead, it was retained as a substitute standard antitank weapon for special tasks or battle environments. since the batteries of the dragon and the wires of the tow could fail due to extremely low temperatures, the m67 was used for units deploying to arctic environments and remained in many infantry units in west germany, such as the 1st battalion, 15th infantry, 3rd infantry division. also, vii corps combat engineer battalions were using the m67 as their main anti-armor weapon during the mid-1980s. heavy physical security military police companies used the m67 on special weapons sites in west germany as an anti-vehicular weapon. these weapons were issued 6 per company, 2 per platoon for each combat engineer company. until the 1990s, the 6th light infantry division in alaska was still using the m67 in its special weapons platoons. two m67s were used by c co 5/87th (lt infantry) 193rd infantry brigade during operation just cause in the republic of panama in 1989, using the m590 antipersonal ammunition. similarly, the urban environment of west berlin prompted the army to keep the weapon with the 4th, 5th and 6th battalions of the 502nd infantry regiment, berlin brigade, as late as winter 1991; the m47 dragon replaced it in january 1992. the army rangers retained the m67 in their weapons platoons until the 1990s, when it was replaced by the 84 mm m3 carl gustav; ranger m67s played a key role in knocking out two btr-60 apcs of the people's revolutionary army in grenada during operation urgent fury in 1983. lastly, combat engineer units used the m67 as a demolition gun to destroy bunkers and other hard point targets as part of their mtoe (modified table of organization & equipment) at least as late as 1990.