Final answer:
Army servicemembers do not need a civilian driver's license to operate tactical vehicles on a military installation; they must follow military-specific training and guidelines for vehicle operation.
Step-by-step explanation:
When considering the operation of military tactical vehicles on an installation, army servicemembers are not required to have a civilian driver's license. Instead, they must meet the military's requirements for operating such vehicles, which typically include completing a specific training program designed for military drivers.
In essence, the driving regulations on a military installation can differ significantly from civilian regulations, and servicemembers must adhere to the rules and guidelines established by the military for the operation of tactical vehicles within the bounds of the installation.