Which mode is NOT a firing option for the 60mm cannon?

The 60mm mortar system has specific firing modes that dictate how it can be used to engage targets effectively. Among these modes, “auto” is not typically recognized as a standard firing option for the mortar. The system is designed primarily for either conventional or manual firing methods, which allow for precision and control when targeting.

In conventional firing, the mortar is set up and fired in a standard manner, following established procedures to ensure accuracy. Manual firing refers to the operator's direct control over the aiming and firing processes, allowing for more flexibility in dynamic combat situations.

Handheld mode, while less common, is also a recognized option within specific contexts, especially for lightweight mortars like the 60mm, where portability is crucial.

By understanding these established firing practices of the 60mm mortar, it becomes clear that "auto" is not an applicable or viable mode for this particular equipment, as it does not align with the operational capabilities and intended use of the mortar systems.