Which of the following is not part of the monthly inventory requirement for ARNG and USAR?

The monthly inventory requirements for the Army National Guard (ARNG) and the U.S. Army Reserve (USAR) specifically focus on items that are critical to military operations and readiness, such as weapons and ammunition. These inventories ensure that the organization maintains accurate accountability for essential military property.

Inventory of ammunition, physical counts of weapons, and verification of lot numbers are all components of the monthly inventory process because they directly contribute to the operational capability and safety of military personnel and equipment. These activities help in maintaining control over arms, munitions, and other equipment necessary for missions.

In contrast, the review of medical supplies is not typically part of the monthly inventory requirement for ARNG and USAR. While managing medical supplies is important, it does not usually fall under the same stringent monthly inventory checks designed for ammunition and weapons. Regular oversight of medical supplies may occur, but it does not require the same frequency or specificity as those items closely linked to combat readiness. This distinction highlights the focus on the most critical items that directly affect military operations, hence making the review of medical supplies the correct answer for what is not included in the monthly inventory requirement.