Final answer:
Commanders use the AEF reporting tool to conduct two types of unit type code assessments: UTC Readiness Assessment and UTC Capability Assessment.
Step-by-step explanation:
The AEF reporting tool is used by commanders to conduct two types of unit type code assessments. These assessments help evaluate the readiness and capability of military units. The first type of assessment is the Unit Type Code (UTC) Readiness Assessment, which assesses the readiness level of a unit based on its assigned UTCs. The second type is the UTC Capability Assessment, which evaluates the unit's capability to perform specific missions based on the availability and proficiency of its assigned UTCs.