Which fuze setting is most effective for targets with overhead cover?

The delay fuze is the most effective option for targets with overhead cover because it allows the mortar round to detonate after a specified delay once it has penetrated the cover. This capability is particularly useful when engaging targets that are protected by overhead structures, such as buildings or bunkers. The delay ensures that the round can penetrate the cover before exploding, maximizing its destructive effect on the target inside.

In contrast, impact and contact fuzes detonate upon striking a surface, which may not be effective if the target is shielded by overhead cover. Proximity fuzes, designed to detonate when the shell comes close to the target, may also not function effectively against protected targets since they rely on detecting the target’s presence in the air rather than penetrating it. Thus, for targets with overhead protection, the delay fuze is the most appropriate choice for ensuring effective engagement.