![US Army Heavy Mortar Team](https://cdn.zatu.com/wp-content/uploads/2018/06/18164136/ZWAG-403013009-1.jpg)
US Army Heavy Mortar Team
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Description
After the experience of gas in World War I, the Americans added a Chemical Corps into the army armed with 4.2" mortars to fire poisonous gas. The near-total absence of chemical on the battlefield in World War II led to a rapid reorganisation of these units, which became heavy mortar sections.